Features: 500D Tarpaulin construction Dual-layer waterproof tarpaulin material with sonic HF-welded seams keep gear dry Three-fold roll-top closure with quick release air valve for easier closing Permanently mounted four row military-spec MOLLE webbing system on front panel to secure 5L or 10L accessory packs Light grey interior for better visibility at the bottom of the bag Heavy duty ergonomic adjustable shoulder straps with stash pocket for easy rear seat mounting Quick-release adjustable sternum strap Nylon webbing carry handle for easy carrying off the bike External water/fuel bottle carrier External mesh carry pocket Removable padded laptop and tablet carrier to transport and protect your tech Laptop pocket dimensions: 11" x 15" Tablet pocket dimensions: 11" x 12" Multiple heavy weight rated D-rings and looped ends for G-hook systems Included accessory mounting straps Reflective pattern to keep you visible in low light conditions Dimensions: 25 Liter: 17” Tall x 11” Wide x 6” Deep 40 Liter: 21” Tall x 14” Wide x 7.5” Deep