TOUGH STORAGE FOR YOUR COMMUTE. 100% Polyester Main body compartment offers spacious storage. Hard bottom helps keep items safe from bumps and scrapes. Zippered wet/dry compartment at the bottom keeps things clean and organized. Handles can attach together for an alternate carrying option. Dimensions: Medium: 53L x 30W x 27H cm/ 37L. Large: 64L x 31W x 30H cm/ 59L.