All Mountain Cycling Performance CyclingMountain bikers who love the descent need a hydration pack that can hold all their gear. The Zealot series carries armor, tools and full face helmets securely and comfortably. Padded front compression pocket with room for body armor or other bulky items. Large, stretch mesh side pockets are integrated with maincompression panel. LidLock helmet clip. Backpanel zip offers wide access to main compartment. Hydration sleeve against backpanel has elastic cord compression to keep water under pressure. External zippered pocket is perfect for keys, wallet, etc. Removable roll out tool pouch. Blinker light attachment patch on front panel. Reflective details improve night time visibility. Large grab handle. 3L reservoir included. Reservoir Wt 11 oz 0.31 kg. Inches 20H x 11W x 10D.