Hydration Bladder Water Reservoir, 2L Water Storage Bladder Bag for All Kind of Hydration Pack,Tasteless and BPA-Free,TPU Material,Best for Hiking Cycling Climbing Hunting Racing Biking Running EASY CLEANING & FILLING : The big opening makes for easy pouring of water. Our water reservoir is pressure - tolerant and wear - proof, manufactured with leak proof sealing technology and high smooth interior surface, the smoothness of the liner prevents the germ and the lime from adhesion, which promotes health and easy to clean. SAFETY & HEALTH: Taste free, non-toxic,the whole hydration bladder is made of premium anti-bacteria material for free mouthpiece. All the materials are completely BPA-free and FDA-approved.It wont leave a bad taste in your drink, and it prevents leaking with easily accessible ON / OFF valve and no plastic taste on the nozzle hose. INSULATED TUBE: The 2 Liter water reservoir can withstand temperatures from -20 to 50 degrees celsius.Best for Hiking, Camping, Cycling, Hunting etc. CONVENIENT:The big filling hole makes it easy for pouring of water and ice into the backpack water reservoir. Carring the water reservoir and enjoying your ourdoor life. 100% MONEY BACK GUARANTEE: If you are not satisfied with our water reservoir ,let us know and you will be offered a full refund or replacement. (Attention Please: If you also want a Water Filter, you can search "B00JD3KOVK" on Amazon.)