This is not your typical hydration bladder. Source Hydration Bladders have been battle tested by Special Forces in war. One thing that separates the WXP Hydration System from other hydration packs is its Taste-Free technology that does not affect the taste of water. But that’s not its only great feature. It is a high performance reservoir system that comes with a glass-like liner and is integrated with Grunge-Guard antimicrobial. Its specially designed Storm Valve comes with a no-bite design that delivers 25% more flow than other packs with bite designs. It also comes with a Dirt Shield valve sheath. On top of all that….these things are tough as nails. Source has also developed an adapter for this bladder that allows you to fill the bladder while it’s still in your pack using a hose or water bottle. That adapter is sold separately and can be picked up HERE.