Features 2L Hydration Wide Mouth Water Bladder Bag-Cycling Hiking. Constructed by high quality Nylon fabric, lightweight and durable. Tube connected to the bottom of the bladder. Wide webbed shoulder straps with holes for the water tube Storage compartment for keys, phone, snacks etc Adjustable chest and shoulder straps Can be used to store water with 10 to 50 degree celsius. Reflective article design for better safety Foldable design, saving your pack space when not in use. Suitable for outdoor activities like cycling, rock-climbing and hiking. Specifications Water Bladder Bag Material: PEVA Capacity: 2 Litre Tube length: approx. 105cm Size: approx. 39 * 17.5cm Sport Backpack Material:  Nylon