Waterproof Hydration Backpack with Integrated Back Protector The ultimate solution for mountain bikers needing hydration, cargo space, and back protection in a streamlined, waterproof design. Equipped with a 2.0L hydration bladder and 5L cargo capacity, this award-winning backpack offers unmatched comfort with its chest harness and adjustable shoulder fit. The HydraDris lightweight yet durable construction ensures comfort and performance, keeping hydration secure and easily accessible even on intense rides.