Packs/Racks/Baskets

The Dummy Cargo Kit includes a pair of Dummy Rails, a pair of Dummy Bags, and a Dummy Deck, plus all the hardware you'll need to install everything and get haulin'. Solidly constructed from high-quality materials and chock-full of little details that ensure their usability, the kit works with any system using the Xtracycle cargo bike design, including of course Surly's own Big Dummy. In fact, this is the stuff they now spec on the Big Dummy complete bike. - 840d nylon exterior provides abrasion-resistance, while the tarp liner keeps cargo dry - Dummy Bags feature a roll-up rain flap, an expandable cargo flap, and a water-resistant inner pocket with an optional divider - Stainless steel drainage and cinch cord grommets, replaceable cinch cords, and replaceable wear patches at the disc caliper and derailleur contact points

Surly Dummy Bags are designed to work with the Big Dummy cargo bike and other cargo bikes using the Xtracycle Longtail Standard. They were designed to provide the functionality and reliability you expect from Surly products. All materials, from fabric to thread to hardware, were chosen specifically for their given applications — as light or as heavy as they need to be to survive the battle against the elements and daily wear and tear. The 840d nylon exterior provides abrasion-resistance, while the tarp liner keeps cargo dry. Dummy Bags feature a roll-up rain flap, an expandable cargo flap, and a water-resistant inner pocket with an optional divider. Surly also included little details like stainless steel drainage and cinch cord grommets, replaceable cinch cords, and replaceable wear patches at the disc caliper and derailleur contact points. Dummy Bags work best with Surly Dummy Rails and Dummy Deck. Each piece will work with older parts — your Dummy Bags will play well with Xtracycle rails, for example — but fit and use of all features will not be ideal.

The Back-Roller Pro Plus is the extra-large version of the popular Back-Roller Plus touring bag. With a volume of 70 liters per pair, it offers almost twice as much storage space. It’s also the first Ortlieb Back-Roller with an additional front pocket. Although not waterproof, the pocket is practical, offering 4 liters of space for water bottles, sunscreen, wet clothes, and other items. The proven roll closure keeps the contents of the inner compartment clean and dry at all times. Thanks to the ingenious QL3 system, you can quickly and conveniently mount your bags on almost any bike rack.

Make low battery power a thing of the past! The Ortlieb Ultimate 6 Pro E allows you to recharge while riding your bike. This practical touring handlebar bag offers the right platform, allowing you to operate your mobile devices (e.g. for navigation) with the power you generate via your hub dynamo. All you need is an appropriate transformer that can be purchased separately. Thanks to the contacts integrated in the handlebar bag’s mounting device, a power connection is established automatically as soon as you attach the bag to the handlebar. Features: - Suitable for handlebars up to 31.8mm (not for carbon handlebars) - Compatible with the KLICKfix system by Rixen&Kaul - 3M Scotchlite reflector - Large outer mesh pocket (not waterproof) - Velcro closure - External base loops for straps - Max capacity: 5kg - Compatible with Map Case (models 2017 and newer) Compatible Transformers include: - Busch + Müller light "Luxos U" or "Lumotec IQ2" - Supernova "The Plug" - Busch + Müller "E-Werk" or "USB-Werk"

Bontrager's Harelbeke Backpack is a true cyclists "go anywhere, at anytime" backpack named after the start city of the famous E3 one-day semi-classic road race. - Exterior access wet/dry shoe compartment separates stinky kit from Sunday's best - Exterior access 17" laptop compartment keeps you moving through security lines - Pass-through opening on padded back panel allows for roller bag integration - Internal water resistant water bottle compartment and mesh pocket for sunglasses - Divider pockets keep tablet, media and essentials organized - External helmet carry keeps helmet securely in place - Includes zippered travel wallet for documents, cash and passport

These awesome waterproof bike bags are made with wear-resistant, waterproof tarpaulin material made of PVC-coated polyester. They offer an additional front pocket, proven roll closure, and use the ingenious QL2.1 system for a super convenient and secure attachment to virtually all commercially available bike racks.

Visibility is an important safety consideration that the Sport-Roller High Visibility tackles expertly. Both the waterproof, polyurethane-coated Cordura fabric in neon yellow and the black fabric parts of this bag are densely interwoven with high-luminosity reflective yarn. This composition turns the entire bag into an eminently visible reflector when it is picked up in the headlights of passing cars. - Shoulder strap with snap hook - Base feet - Dust/snow gasket under the lid with cord - Inner pocket - 3M Scotchlite reflectors

A waterproof, dry-bag-inspired / urban-inspired pannier set that overcomes limitations normally found with waterproof bags. - OCEANWEAVE 600D reclaimed fishnet polyester with waterproof polyurethane coating. - HYDRACORE liner provides an exceptional IPX5 waterproof rating. - Rixen & Kaul VARIO 2 spring-loaded hooks immediately adjust from 6mm-16mm, without any need for tools. - Rixen & Kaul lower SLIDE-LOCK and FLIP-LOCK hold panniers firmly in place. - Triple webbing tie-downs allow variable size/shape loads to be carried outside of the main cavity. Ideal for attaching U-locks. - Intuitive waterproof roll-down closure system. - Ultra-visible three-way 3M triangle logos. - Ultra-stiff Polypropylene backing plate. - Front and rear light clips. - Carry handles. - D-Rings built in to hook attachment points for additional luggage tie-down, or for attaching your own shoulder strap. - Volume 45.2L / 2755 cu/in (pair) (22.6L / 1378 cu/in each bag) - Weight 1530g / 3.37 lbs (pair) - (765g / 1.69 lbs each bag) - Dimensions 43x30x17.5cm / 16.9-inches x11.8-inches x6.9-inches (each bag)

The Mountain Panniers are perfect for on or off-road cycling adventurers, especially those who value versatility and rugged durability. - Made of heavy-duty Dupont Cordura - Can be used on either front or rear - Hood expands up to allow overflow packing - 3M Scotchlite Reflective Material - Sold in Pairs - Weight: 1720 grams - Capacity: 67 liters

Made of durable polyester fabric and long known as an ideal pannier for extended tours in any kind of weather, the spacious Bike Packer Classic is now available with the QL2.1 rack mounting system. The advantage of this faithful companion at your rear wheel: greater transport comfort, stability and safety. - Panniers (pair) with classic lid closure for large packing volume - Sides of PS 490 nylon material, front and back of PD 620 - QL2.1 mounting system for racks with max. 16 mm tube diameter - 20 mm hook available as separate accessory (e.g. for E-bikes) - Reduction inserts for tube diameters 8, 10 & 12 mm with anti-scratch function preventing abrasion on the rack - Hooks adjustable without requiring tools - Lower hook rail made of two-component hard-soft synthetic with anti-scratch function protecting the rack - Including integrated inner pocket and shoulder strap - Due to its symmetrical form it is possible to use only one bag on left or right side - The dust flap—with easily operable pull cord—under the lid provides protection e.g. against water, dust and snow - The edge protector prevents contact with spokes and abrasion - Simultaneous use of ORTLIEB Travel-Biker or Trunk-Bag possible - Highly reflective 3M Scotchlite reflector - Easy to clean inside - Optional accessories: ORTLIEB carrying system, outer pocket(s) (size S), mesh pocket, bottle cage, 20 mm QL2.1 hook, anti-theft device long - Note: In order to meet standard IP54 (5=protected against dust, 4=protected against splash water coming from all directions) the lid must be properly closed.

The COSMO is the flagship model for stainless steel Tubus carriers. It has a wider cargo area, extreme carrying capacity, and a longer back for better tail light protection. - Weight: 680g or 24 oz. - Load Capacity is 40kg or 88 lbs. - Wheel size 26? or 700c

An evolution of the classic briefcase, the New Street is designed to go from the bike to the office and beyond. Compatible with KLICKfix modul rail rack attachment, it features a hidden luggage trolley sleeve, and removable shoulder strap. Made from durable, waterproof materials with reflective details and padded laptop sleeve. Volume: 15L. -Waterproof PU Coated Nylon 66 & Cordura -YKK Aquaguard Zips -Padded Compartments -Clever Interior Details -High Grade Aluminium Hardware -100% Recycled Lining -Reflective Details

The Pitfield is a Flap-Close Backpack, designed for urban cycling. Made from durable, waterproof materials, the Pitfield is an ideal bag for the everyday, all-weather cycle commuter, and includes a padded laptop compartment, aquaguard zips and a unique, stretchable compartment for a helmet and other items. -Waterproof PU Coated Nylon 66 & Cordura -YKK Aquaguard Zips -Padded Compartments -Clever Interior Details -High Grade Aluminium Hardware -100% Recycled Lining -Reflective Details VOLUME : 25-28L

The Sparkhill Backpack is designed with practical innovations for the urban lifestyle, featuring a padded laptop compartment, aquaguard zips and a unique, stretchable compartment for extra items. Made from durable, waterproof materials, the Sparkhill is an ideal bag for the everyday cycle commuter. -Waterproof PU Coated Nylon 66 -Waterproof PU Coated Cordura -Coated YKK Aquaguard Zips -Reflective Details for Extra Safety -Premium Aluminium Hardware -Padded and Ventilated Back Panel and Shoulder Straps -Padded Laptop Compartment -Water Bottle Pocket -Bicycle Helmet Attachment - Rich Interior Details and Organization -Cyclepet Lining from 100% post-consumer PET bottles

High visibility is so important to us at ORTLIEB because it is a matter of safety. Both the waterproof, polyurethane-coated Cordura fabric in neon yellow and the black fabric parts of this bag are densely interwoven with high-luminosity reflective yarn. This composition turns the entire bag into an eminently visible reflector when it is picked up in the headlights of passing cars. With its 20-liter payload, this versatile daypack is just the right size for work, school and play. The detachable zippered pocket on the inside offers plenty of space for keys and other small items. Added carrying comfort is ensured by the foam-padded back, carrying loop and ergonomic shoulder straps, breast strap and waist strap. The edge protectors at the bottom increase the daypack's resistance to wear and tear. The front is designed to permit the easy attachment of a bike helmet or an additional safety light. - Waterproof daypack with comfortable foam padding - PVC-free reflective fabric - Increased visibility when hit by headlights due to highly visible reflective fabric in fluo yellow or black - Ideal as school backpack or for walks - Fixing for optional rear light or helmet (not included) - Wide waist strap - Fast access and easy loading due to roll closure with Velcro - Protection around bottom corners on rear side prevents abrasion - Removable inner pocket for keys, change, mobile phone, can also be used as waist strap pocket - Takes A4 folders - Carrying handle - Optional accessories: cell phone holster for shoulder strap, Velcro extension strap - Note: In order to meet standard IP64 (6=dustproof, 4=protected against splash water coming from all directions) the roll closure must be rolled at least 3-4 times.

A waterproof, bikepacking-inspired / urban-inspired seat pack bag that is quickly attached/removed via an ingenious quick-release seatpost mounting system. Ideal for the commuting trunk bag user who doesn’t want to use a rack. - OCEANWEAVE 600D reclaimed fishnet polyester with waterproof polyurethane coating. - HYDRACORE liner provides an exceptional IPX5 waterproof rating. - Universal Rixen & Kaul CONTOUR MAX seatpost bracket with 2 sets of seatpost clamps. (25-32mm & 32-36mm) – 3kg load rating (not including bag weight). - 8mm Engineered aluminum frame provides stiffness and load stability. - *Not advised for carbon fibre or ultra-lightweight seatposts. - Intuitive waterproof roll-down closure system provides flexible load management. - Front external mesh pocket with Velcro closure. - Outer bungee system with wings, allows excess gear to be carried outside of the main cavity. Ideal for unplanned loads faced by commuters. - Ultra-visible three-way 3M triangle logos. - Polypropylene side stiffeners and dimensional foam top/bottom stiffeners provide additional load stability. - Supplemental rear closure strap system provides additional support. - Built-in U-lock holder. - Rear light clip. - Volume 12L / 732 cu/in - Weight 795g / 1.75 lbs (incl. bracket), 725g / 1.6 lbs (without bracket) - Dimensions 44x18x16-inches / 17.3-inches x7.1-inches x6.3-inches

A full-featured, waterproof urban-inspired pannier that overcomes limitations normally found with waterproof bags. Offers exceptional external load flexibility, removeable internal organizers for digital devices, and a convenient external access pocket for keys and/or phone. - OCEANWEAVE 600D reclaimed fishnet polyester with waterproof polyurethane coating. - HYDRACORE liner provides an exceptional IPX5 waterproof rating. - Rixen & Kaul VARIO 2 spring-loaded hooks immediately adjust from 6mm-16mm, without any need for tools. - Rixen & Kaul lower SLIDE-LOCK and FLIP-LOCK hold panniers firmly in place. - Intuitive waterproof roll-down closure system. - Waterproof outer pocket. - Removeable 14.2-inches x10.2-inches padded laptop/electronics sleeve/organizer. - Removeable 10-inches x8-inches padded tablet/electronics sleeve/organizer. - External zippered pocket for keys/wallet, etc... - Keychain clips + 2 x Axiom keychains. - Independent main compartment and outer compartment compression/cargo straps provide exceptional load control. - Outer straps allow gear to be carried outside of the main cavity. Ideal for unplanned loads faced by commuters. - Strap control loops to protect against strap damage if straps are not secured. - Dual daisy-chain tie-down strips for additional load attachment. - Ultra-visible three-way 3M triangle logos. - Ultra-stiff Polypropylene backing plate. - Front and rear light clips. - Carry handle. - D-Rings built in to hook attachment points for additional luggage tie-down, or for attaching your own shoulder strap. - Volume 22.6L / 1379 cu/in - Weight 1220g / 2.69 lbs (incl. laptop sleeve and tablet sleeve) – (995g / 2.19 lbs without sleeves) - Dimensions 47x28.5x13.5cm / 18.5-inches x11.3-inches x5.3-inches main compartment 33x18x7.5cm / 13-inches x7-inches x3-inches pocket - Pannier sold individually

CONSTRUCTION • Main compartment: blend of 1000D, 850D and 600D polyester with waterproof Hydracore inner liner ensures a waterproof seal and enhances long-term durability • 2-stage compression strap/cargo straps allow variable size/shape loads to be carried outside of the bag cavity MOUNTING SYSTEM Rixen & Kaul Modul-Rail system provides unrivaled stiffness, adjustable hook spacing, convenience and stability in a serviceable package. The Rixen & Kaul lower Slide-Lock rail locks panniers in place. ADDED BENEFITS • Intuitive waterproof roll-down closure system • Ultra-visible 3M triangle logos • Ultra-stiff polyurethane backing plate • Front and rear light clips • Wear guards • Removable 14.2 x 10.2-inch padded laptop sleeve/organizer can be used in right or left bag • Compression/cargo straps with loop guides prevent straps from getting caught in wheel when unclipped

Salsa's EXP Series Anything Cradle system is designed to create carrying capacity in front of your handlebars, while providing ample room for cables without fear of kinking them. This system is available as a complete "kit", or sold individually for custom set-ups. - Complete kit includes the cradle, the EXP Series Dry Bag, the EXP Series Anything Cradle Front Pouch, and EXP Series Anything Cradle Front Straps - Each part of the kit can be purchased individually - Modular system, using the EXP Series Dry Bags for the perfect carrying system or your own dry bag with a ladder strap system - Works with or without front pouch - "Ladder Lock" three-slot strap weave design that eliminates straps from slipping - Extremely versatile - Max. Load Weight: 8lbs (3.7kg)

Confidently haul your most precious cargo, safely inside the Adjustable Monkey Bars. Parents love this awesome Add-On for all our long tail style cargo bikes because it provides a place for idle hands and peace of mind all at once. Great for kiddos who are old enough for the “big kid” seat on the rear rack, but are easily distracted or take naps on the ride. The Adjustable Monkey Bars are totally compatible with the Yepp Maxi child seat and most of our other Add-Ons. The new adjustable design allows more versatility with your rear rack. With the easy to use snap pin attachment system the bars can come and go as quickly as your cargo changes. This new feature also makes storing your cargo bike in a tight space much easier. - Aluminum - Multiple passenger (Kiddos) - Compatible with one Yepp Maxi child seat and most Yuba Add-Ons - Hardware and soft bar tape included - 2 Year warranty - Compatible with Spicy Curry, Sweet Curry, Boda Boda, Electric Boda Boda, Boda Boda Original, Mundo LUX and Mundo Classic.

Ortlieb offers their legendary Back-Roller panniers in a completely PVC-free version, the Back-Roller Free. These panniers feature Polyurethane-coated polyester fabric that delivers the same waterproof, durable performance of Ortlieb's classic fabric, while eliminating the PVC that some prefer to avoid. The waterproof roll closure ensures safe and waterproof storage of food and equipment, and its QL2.1 mount system offers quick and easy one-handed mounting and unmounting on nearly any rack. A shoulder strap stays clipped safely out of the way while on your bike and provides carrying comfort when you take the Back-Roller Free off the bike.

Durable polyester fabric make this pannier a long lasting touring companion. The waterproof roll closure ensures safe and waterproof storage of food and equipment. With its QL2.1 fixing it is quickly mounted and taken off the bike rack. A shoulder strap provides carrying comfort when taken off the rack. - Classical rear pannier (pair) with roll closure - Sides of PS 490 nylon material, front and back of PD 620 - QL2.1 system for racks up to 16 mm - 20 mm hook available as separate accessory (e.g. for e-bikes) - Including reduction pieces for tube diameters 8, 10 and 12 mm; with anti-scratch function reducing abrasions on rack - Top QL hooks and lower sliding hook adjustable without requiring any tools - Lower hook rail made of two-component "hard-soft" synthetic reduces abrasions on carrier - Including integrated inner pocket and shoulder strap - Can be used individually (e.g. for shopping, sports, picknick) - Can be combined with the ORTLIEB Rack-Pack size S or M - Highly reflective Scotchlite reflector - Easy to clean inside - Optional accessories: ORTLIEB carrying system, outer pockets (size S), mesh pocket, bottle cage, 20 mm QL2.1 hook, anti-theft device long - Note: In order to meet standard IP64 (6=dustproof, 4=protected against splash water coming from all directions) the closure must be rolled 3-4 times.

Dubbed 'Straggle-Check' frame bags, these bags are designed to fit both 700c and 650b Straggler and 700c Cross Check frames. Size up one size on your bag if you've got a 650b Straggler frame and voila, it fits. These are handmade by Revelate Designs in the U.S., made of Dimension Polyant VX 21 polyurethane coated fabric. It's durable, rip resistant, tightly woven and laminated to make it highly water resistant but not fully waterproof…. Revelate advises using stuff sacks inside (such as the one in which our bags are packaged) if you risk riding in extended downpours or underwater. Surly's Straggle-Check frame bags (as well as their mountain bags) are now using a ladder strap system, which allows greater flexibility in how you attach the bag to your frame. The ladder straps let you customize the fit and placement of the mounting straps so if you have some weird contraption clamped to your frame tubes like a chain keeper, cable pulley, or some trinket grandma gave you, it won't interfere with the mounting straps on the frame bag. They're also including foam bumpers for the mounting straps to minimize thread abrasion to the bag and attachment points Quality YKK brand water resistant zippers – with an improved, water resistant zipper 'garage' – control compartment access and help keep the weather out. Zippers are sewn with a stretch panel to relieve stress on the zipper as well. Stress even kills zippers. The large main compartment has a flexible divider inside, and there's a hydration port to make sure your whistle stays wet. There's also a compartment suitable for smaller items you'll access relatively often, like your map, phone, hard boiled eggs, uncontained pudding, marbles for playing marbles, your dugout, that ring you found that makes you disappear when you put it on, or whathaveyou. Frame bags such as this are light and reasonably voluminous. They are stable because they center weight low between your wheels and body, and they go places where racks and panniers are often troublesome, like singletrack. Note: due to the rough texture of the mounting straps, prolonged use may lead to scratched or worn paint. If you're worried about keeping everything looking pristine you probably ought to look for some other type of bag, or figure a way to protect the paint, such as duct tape, or tatting a top tube doily - for example.

Dubbed 'Straggle-Check' frame bags, these bags are designed to fit both 700c and 650b Straggler and 700c Cross Check frames. Size up one size on your bag if you've got a 650b Straggler frame and voila, it fits. These are handmade by Revelate Designs in the U.S., made of Dimension Polyant VX 21 polyurethane coated fabric. It's durable, rip resistant, tightly woven and laminated to make it highly water resistant but not fully waterproof…. Revelate advises using stuff sacks inside (such as the one in which our bags are packaged) if you risk riding in extended downpours or underwater. Surly's Straggle-Check frame bags (as well as their mountain bags) are now using a ladder strap system, which allows greater flexibility in how you attach the bag to your frame. The ladder straps let you customize the fit and placement of the mounting straps so if you have some weird contraption clamped to your frame tubes like a chain keeper, cable pulley, or some trinket grandma gave you, it won't interfere with the mounting straps on the frame bag. They're also including foam bumpers for the mounting straps to minimize thread abrasion to the bag and attachment points Quality YKK brand water resistant zippers – with an improved, water resistant zipper 'garage' – control compartment access and help keep the weather out. Zippers are sewn with a stretch panel to relieve stress on the zipper as well. Stress even kills zippers. The large main compartment has a flexible divider inside, and there's a hydration port to make sure your whistle stays wet. There's also a compartment suitable for smaller items you'll access relatively often, like your map, phone, hard boiled eggs, uncontained pudding, marbles for playing marbles, your dugout, that ring you found that makes you disappear when you put it on, or whathaveyou. Frame bags such as this are light and reasonably voluminous. They are stable because they center weight low between your wheels and body, and they go places where racks and panniers are often troublesome, like singletrack. Note: due to the rough texture of the mounting straps, prolonged use may lead to scratched or worn paint. If you're worried about keeping everything looking pristine you probably ought to look for some other type of bag, or figure a way to protect the paint, such as duct tape, or tatting a top tube doily - for example.

The Strand Shoulder Bag is a messenger-style bag featuring the Brooks patented cycling belt for stability whilst riding. Made from durable, waterproof materials and robust hardware, the Strand features a padded laptop compartment, aquaguard zips, and a unique stretchable compartment on the front. -Waterproof PU Coated Nylon 66 & Cordura -YKK Aquaguard Zips -Padded Compartments -Clever Interior Details -High Grade Aluminium Hardware -100% Recycled Lining -Reflective Details VOLUME : 15L

Ideal for multiday tours and self-supported races, the Ortlieb Gravel-Pack duo offers you a combined payload of 25 liters for additional gear such as mess kits, food, and other "luxury" items. Mounting the Pack to your lowrider rack allows you to maintain a low center of gravity and undiminished off-road agility despite your extra gear. While the Pack’s streamlined design – without inside pockets and a shoulder-strap pad – helps to keep it in the featherweight class, its lightweight, wear-resistant material withstands even the harshest of rock and gravel conditions you encounter on your way. And no matter how wet the weather, your things will stay dry thanks to the proven ORTLIEB-waterproof quality and roll closure. With the QL2.1 system and two lower mounting hooks, the Gravel-Pack remains tightly attached to your rack even when the terrain gets rough.

- Full chromoly construction specifically designed for 700c bicycles - Mounts to hub axle for universal fitment - Adjustable height with lower horizontal strut for fitment of a small bag or pannier - Deck provides ample cargo space at 14.25"X12" - Optional stylish fence available separately

Bread Basket takes the idea of bike basket to a whole new level. Designed to hold two cases of beer or two bags of groceries and rated for 50 pounds of cargo; the Bread Basket is no slacker. Designed for strength and stability, the Bread Basket bolts directly to the Yuba frame and doesn’t turn with the handlebars. Compatibility: Attaches directly to the frame of the Yuba Mundo v3.2 and above, all Boda Bodas, Sweet and Spicy Curry. Mundo V5, Boda Boda (newest version 3), and Sweet/Spicy Curry are only compatible with the 2017 and newer version of Bread Baskets. - Loading capacity 50 lbs / 25kg - 19x14x6in - Alloy - Matte black color - 3 lbs - Mounting hardware included - Optional quick release mounting skewers (sold separately)

When race day arrives, the last thing you want to worry about is organization. The Zipp Transition 1 Gear Bag has multiple compartments to keep your essentials easy to find and converts quickly from backpack to duffel with a removable shoulder strap. A top molded pocket protects valuable items like cell phones and sunglasses, while a large ventilated lower compartment keeps shoes or wet clothes separated from the main hold. Camera bag-style dividers, an adjustable helmet pocket, and water-resistant fabric further extend the Transition 1's versatility, providing race-day relief from basic, cluttered alternatives. - Center compartment includes camera bag-style dividers to keep items organized. - Large ventilated lower compartment for shoes or wet clothing. - Adjustable helmet pocket. - EVA top pocket. - Side net for water bottles. - Reflective tabs. - Total volume of 56 liters

Ortlieb's spacious Seat-Pack is perfectly suited to help carry your gear on an epic ride. The packing volume varies between 8 and 16.5 liters thanks to the adjustable rolling closure. Regardless of how epic the terrain is, the Seat-Pack always stays in the same shape and in the right position on the bike. This is due to the exclusive Ortlieb welded construction, innovative compression system, and super-sticky seat-post straps.