Come and see our amazing products. hydration backpack is a lightweight, reliable and comfortable water backpack. Made of ultralight and durable fabrics, the water backpack makes you feel more comfortable while running, hiking and cycling. Breathable & air flow system to keep your back cool and dry. Soft cushions on the rear of the backpack to comfort your back.hydration bag with a 2L BPA-free water bladder that made of food grade class EVA material. A large opening design is easily to add ice and cleaning to the bottle. The black insulated sleeve can keep the water cool and prevent scratches.Available in many colors and custom logo is welcome. Pls confirm with us about the packing info, stock color and exact production time before placing your order.