PREMIUM MATERIAL, INSULATED TUBE SLEEVE- The Military Grade Hydration Water Bladder Is Thick. Food Grade TPU Material Plus TPU Drinking Tube Make The Whole Water Bladder Taste Free. The 2l Water Reservoir Keeps Water Inside Clean. • QUICK RELEASE CONNECTOR, LEAK-PROOF SYSTEM-The 2l Hydration Bladder Has Detachable Hose Which Can Be Connected Or Disconnected By One Hand. When Tube Is Disconnected, The Shutoff Valve U Can Closes And The Water Bladder Doesn’t Leak At All. Thus, You Can Quickly Refill The 2l Hydration Bladder With No Leaking Issue. Withstand Temperatures - The 2l Water Reservoir Can Withstand Temperatures From -20 To 50 Degrees Celsius. The Tube Resists Temperature Changes Whether Hot Or Cold Weather. • VERSATILE USE -This Water Bladder Makes It Easy To Keep Your Pace And Drink On The Go, The Hoses Right Here On Your Shoulder, You Just Keep On Walking And Sip From The Bite Valve. This Hydration Bladder Also Works Perfectly On Day Walks, Trail Running, Hiking, Climbing, School Cycles, Travel, Backpacking, Outdoor. EASY FILLING AND CLEANING - The 2 Liter Hydration Bladder Has Large Opening Which Makes Filling/Refilling Water So Easily. Connecter Pipe Size- 1m, BAG SIZE - 41cmx17cm. NOTE- 1. Before Filling The Bag, Clean It With Dish Washing Soap And Water. 2. Make Sure It Is Completely Dry, Inside And Out, Before Storing. 3. Please Do Not Fill Milk, Juice Or Wine Into The Bag, These Drinks May Do Damage To The Bag. PACKAGE INCLUDE: 1x 2L Bicycle Mouth Water Bladder Bag(Other Accessories Are Not Included)