The Source Hydration WXP 3L Storm Valve Reservoir is a high performance 3-liter hydration reservoir system. This durable water bladder has an exclusive 3 layer coextruded Polyethylene construction with Taste-Free, low maintenance, Glass-Like liner. Integrated Grunge-Guard antimicrobial keeps your water clean. The Source WXP 3L Storm Reservoir has a patented leakproof wide slide opening for easy cleaning, draining, and ice insertion. The tube cover insulates your water supply and blocks UV-light, so water stays cool and bacteria free from first to last sip. The Source Tactical Gear WXP Storm Valve Water Reservoir uses QMT Quick Mate Technology hose fitting for push button convenience with no leakage, and offers click-in compatibility with USMC Miox filter system. Patented push/pull Storm Valve requires no biting, delivers 25% higher flow than bite designs. Integrated valve shut-off. Dirt Shield valve cover.