Come and see our amazing products. The hydration backpack included 2 Liter BPA FREE & food grade hydration bladder for men women kids. The perfect size offer a nice balance of reasonable weight and bulk while providing a sufficient quantity of water.The water bladder has passed the air pressure test, is fully pressure resistant, 100% leakproof, and the double sealing surface technology greatly improves the durability. Just biting the soft straw to suck water, allowing you to have a drink conveniently and quickly during hiking, biking, mountain climbing, hunting, running, camping and all outdoor sports.The water backpack is lightweight, adjustable,comfortable. It made from breathable mesh back panel and high-quality nylon fabric, so that you will not feel sultry and uncomfortable during outdoor sports. Pls confirm with us about the packing info, stock color and exact production time before placing your order