Hydration Bladder 2 Liter, 1.5 & 3 Liter Water Bladder, Leak Proof Water Reservoir, Tasteless BPA-Free Military Water Storage Bladder Bag Hiking Climbing Cycling + Cleaning 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. Our water bladders passed pneumatic pressure test, 24 hour swing test and 24 hour vibration test. It is completely pressure-tolerant and leak proof for carefree biking, running, hiking and other outdoor adventures! LARGE OPENING & BIG FILL HOLDER - Big fill holder allows you to fill the water pack with ease and with 4 inch screw top our 2L hydration bladder has one of the largest mouth opening on the market. It is perfect for filling 2L bladder with ice cubes and different sports drinks and it makes cleaning and drying super easy. 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. FREE CLEANING KIT & DRYING SUPPORTERS - We want that our customers have the best experience when using our water bladder so you will get 3pcs hydration cleaning kit FOR FREE and finally be able to completely clean and dry your water backpack bag. Hydration backpack water pack also comes with specially designed drying supporters for easy drying when on the road. You will never have to worry about the mold and dirt again! 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.