The Ortlieb Back-Roller Core is the solid base bag among the Back-Rollers and yet 100% waterproof. With its robust polyester fabric, it’s not only suitable for extended bike tours but also ideal for daily urban commutes. With the Back-Roller Core, you’re always ready to transport important items dry and securely whether it’s on your way to work, shopping, or other urban adventures. A reliable companion that withstands the elements and simplifies your everyday life.If the basic functions of the Back-Roller Core are ever insufficient, this practical bag can be expanded with various optional accessories. The Carrying System Bike Pannier helps carry the Back-Roller Core on your back, various inserts provide stability to the bag body off the bike, or offer better organization inside the rear bike bag.

• QL2.1 mounting system for racks up to 8, 10, 12 and 16 mm
• Waterproof gag made of PVC coated polyester fabric
• Top QL hooks and lower sliding hook adjustable without requiring any tools
• Lower hook rail synthetic to reduce abrasions on rack
• Highly reflective Scotchlite reflector
• Easy to clean inside
• Maximum load per pannier is 9kg / 20 lbs