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

• 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 / 19.8 lbs
  
• Carry Location: Rear
  
• Number of Compartments: 1
  
• Dimensions: 16.5" Height x 9" Lower Width/12.6" Upper Width x 6.7" Depth
  
• Total Volume: 20 L / 1220.5 cu in
  
• Access Style: Roll Top
  
• Individual or Pair?: Individual
  
• Off Bike Carrying Method: Handle
  
• Waterproof: Yes
  
• Weight: 820g.