Speedo Tri Clops Backpack (50L) Imported Zipper closure 16" shoulder drop 23" high 15" wide Unique three headed triathlon pack with zip system allows for quick entry without removing helmet Dedicated pockets for running and cycling footwear with separate fleece pocket for sunglasses or swim goggles Ergonomic 3D molded shoulder straps are padded for comfort and perforated for ventilation Ergonomic 3D molded back panel improves ventilation air flow Built in room for hydration and trademarked dirt bag to keep clean or wet or dirty or clean contents separated