The Urban Desert expedition is a large capacity seat bag designed for all loads, trails and weather conditions this lightweight seat bag with adjustable load straps is an easy way to carry a sustainable amount of cargo and gear...On your ride. Made of Xpac  Capacity: 16 liters Material:VX21 XPAC & 800 Nylon Canvas Dimensions:27.5 x 7 x 6.5 in unrolled25 x 7 x 6.5 Weight: 17 0z