Get out and play hard with the Geigerrig RIG 500. The RIG 500 comes with a 2 liter reversible, top-rack dishwasher safe hydration engine with a lifetime warranty. The water stays close to your back for optimal balance and room for extra gear. This pack includes several pockets for storing essentials. A favorite of Spartan racers, day hikers, and work crews. Spray to drink, cool, clean and share. Upgrade your system with any Aquamira Series IV Filter to build a complete hydration and filtration system.