Hydration bladder(100 Oz/3/Litres) Portable Foldable and most durable by Wolf'art,Full Water Reservoir for Hiking, Running, Climbing, Outdoor event PREMIUM QUALITY - Hydration bladder is made of thick TPU premium quality flexible anti-bacteria material. Bladder bag is taste free, odorless, BPA free and FDA approved QUICK RELEASE TUBE WITH SHUTOFF VALVE - Our bladder backpack system has quick release auto-lock system that prevents leaking when tube is detached and allows the tube to be easily disconnected from water reservoir for filling, cleaning and storage. 90-degree soft bite mouthpiece with easy turn shutoff valve provides fast water flow. ALWAYS READY TO QUENCH YOUR THIRST - Fit 3 liters of ice cold water comfortable in any backpack . Neoprene Insulated Tubing.Soft Bottle quality. Push-Pull Drinking Cap Cover. EASY TO CLEAN AND FILL:Easy to fill and insert into the pack,easy cleaning design,large opening MONEY BACK GUARANTEE - You can buy with confidence because we want your 100% satisfaction. If the product did not meet your expectations or if you need a replacement please do not hesitate to contact us. We offer 60 days money back guarantee.