This sleek and stylish hydration backpack from CamelBak is designed to allow trekkers, hikers, runners, cyclists, and other outdoor types to keep hydrated and healthy while on the move. Crafted from synthetic material in classic black, the CamelBak Classic 2017 Hydration Pac has a roomy capacity of 2.0 litres of water. The unit is easily refillable, and features external pockets to hold small essentials such as keys, coins, and wallets.