1. Our hiking Hydration Pack fits for your shoulders, chest, and handle, 3 straps are all adjustable for reducing bounce. 2. The BPA and odor free TPU hydration bladder 3L large capacity hydration reservoir with durable plastic insert buckles make your hiking more safe and convenient. 3. The 900D abrasion-resistant nylon material makes our Water Backpack comfortable and durable, Engineering plastic buckle is durable and impact resistant; Military grade webbing is strong, anti fading. 4. Designed for Convenient- This cycling camel Hydration backpack has a hands-free hydration hose which with bite valve, gently biting the valve to open up the flow of water. 5. 3L Hydration water bladder included- It's simple to drink, pull the rubber mouth piece out and the water comes right out. Push rubber mouth piece back to close, You don't have to bite anything. 6. It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures 7. Versatility: Frees your hands while drinking, this camelback backpack is your perfect choice for short trip, camping, bike riding, walking, mountaineering, kayaking, skiing, snowboarding. A decent Holiday Gift for families and friends who love outdoor sports. Specifications: Size:17*4*44.5cm/6.69"x1.57"x17.51" Material: 900D abrasion-resistant nylon material Lining:Polyester Color:as picture show. Weight:0.4kg Capacity:3L Function:Camping,Hiking,Cycling.Riding,Climbing ect. Package included: 1*water bag