An additional outer pocket on each of the Ortlieb Bike Packer Plus Bags boosts their already impressive capacity and makes these panniers the go-to choice for long-distance bike touring. Heavy-duty waterproof-coated Cordura, welded seams, and a lid top seal out moisture, and a drawstring under the lid keeps out dust and dirt. Product FeaturesMaterial: PU-coated Cordura nylonPockets: 1 InnerDimensions: 16.5 x 12.5 x 9in (42 x 32 x 23cm)Max Capacity: [Pair] 2441cu in (40L); [Including pockets] 3271cu in (53.5L)Compatibility: QL2 system, fits 8mm- 16mm top railsCarrying strap: Yes, shoulderWeight: [Pair] 4lb 9oz (2070g)Recommended Use: Bicycle touringManufacturer Warranty: 5 Years