CAMTOA 12L Sport Backpack Hydration Backpack Cycling Hydration Packs for Hiking, Cycling, Running, Camping, Walking(Not included 2L water bladder) Large Capacity-12L: Size: L 9.4 * H 17.3 * W 5.9 IN (L24 * H44 * 15cm). Enough space to hold your necessities for travelling. The thermal insulated pockket can keep the water or food warm or cool when hiking, cycling, running, camping, walking and so on. Adjustable shoulder strap and waist strap to fit your need Waterproof & light-reflecting nylon, breathable pad, mesh grid, construction rope, high quality buckle.