Pardus&trade; Microban Hands-Free Top Sturdy & Tough Widepack Hydration Reservoir System, 3L Thicken PEVA Water Reservoir for Running, Hiking, Climbing, Military Backpack, Marching, Outdoor Event 100% odorless, tasteless, BPA free material. Easy Drinking Instruction: Unlock the mouthpiece, Bite, Drink. Microban, the first band of anti-bacterial technique, can kill the harmful mircobe thoroughly and permanently. Wide-Mouth design, the installation is easy and the leakage is prevented. Double welding sealing technique, can stand a pressure of 60kg. The inner wall of the reservoir is as smooth as glass, prevent the formation of the incrustation inside. The filler cap with filler handle is convenient for adding water or ice into the reservoir. NOTE: Our shipment can not arrive at Guam.