The award-winning pressurized Geigerrig Hydration System allows you to spray water to hydrate, share, clean, cool, etc. - anything you need. The pressurization enables convenient in-line plug-and-play filtration for on-the-go access to natural fresh water sources. When you are done, simply flip your Hydration Engine inside out and place it on the top shelf of the dishwasher for easy cleaning and drying. The RIG 710, with 700 cubic inches of pack space, was made with more care and precision than when your parents made you all those years ago. Its durable 840 Ballistic Nylon material will protect it (and you) from anything you can throw at it. It has more pockets than you have things to put in them. The hidden rain cover will protect your gear when Mother Nature tries to take you down. With the RIG 710 you'll be unstoppable! Bladder: 70 oz., quick-release valves for drinking tube and pressurization tube for easy refill and bladder removal, slide top for easy refill, cleaning and drying.