Lalawow Military Hydration Pack Never Leak Bladder Water Bag Pouch for Running Hiking Climbing Survival Outdoor 3L(100 ounce) 800D Oxford No NASTY TASTE OF WATER HOSE - The entire pack is LFGB certified and has passed a wide range of sensorial tests,Eco-friendly material,100% odorless, tasteless, BPA- Free material. NEVER LEAK - 800D Oxford waterproof fabric + 420D Waterproof nylon lining. High quality materials and a reasonable design ensure no leakage. Hands-free hydration hose with bite valve, gently biting the valve opens up the flow of water. KEEP WATER COOL - It could keep cold water cool. The water in the bag stays cold but if the weather is very hot, the water that stays in the hose gets warm. Just spit the first sip out. VERY LIGHTWEIGHT DESIGN - There is a concealed behind,but only enough room for a flat item or two, because this hydration pack is design as lightweight and convenient. Lifetime Guarantee. If you are not satisfied with our products, you can always replace , return or contact us refund.