Military and battlefield proved tactical bladder. Durable, reliable, and requires virtually zero maintenance. Water in your SOURCE hydration bladder stays fresh and tasty for weeks. Easy handling thanks to Widepac wide opening and screw cap opening that will fit most hydration backpacks in the market. The WXP reservoir has been issued to leading armies and special forces. Firefighters law enforcement and other professionals rely on the WXP for hydration during their day-to-day work outdoors. Our smart accessories and hydration packs complement the bladder and facilitate hydration wherever you go. The Source WXP 3L hydration bladder is perfect for military and tactical missions, outdoor hiking, and for adventure enthusiasts. The best hydration bladder with minimum maintenance and no need for daily cleaning, for perfect hands-free drinking, while on the go.