The Source WXP Hydration Bladder 3L is a high-performance 3-liter hydration reservoir. This Source Hydration Water Reservoir has an exclusive 3-layer coextruded Polyethylene construction, with Taste-Free, low maintenance, Glass-Like liner. The water bladder features an integrated Grunge-Guard antimicrobial system, with a patented leakproof wide slide opening for easy cleaning, draining, and ice insertion. The Source Hydration WXP Water Reservoir includes a tube cover that insulates your water supply and blocks UV light, so water stays cool and bacteria-free from first to last sip. The water carrier also uses a QMT (Quick Mate Technology) hose fitting that gives you push-button convenience, no leakage, and is click-in compatible with USMC Miox filter system. The exclusive Helix Bite Valve delivers high flow with minimal bite pressure, is omnidirectional, and has an integrated twist shut-off. The Source Hydration WXP Water Bladder also features a Dirt Shield valve cover.