A fast, foolproof way to treat sketchy water, the CamelBak All Clear combines a shatterproof bottle with a UV purification system. Fill the 25-ounce bottle, hold the button on its rechargeable cap, and in one minute, 99 percent of all water-bound bacteria is eliminated via a blast of UV rays. To us, it's become a backcountry – and even vacation – essential. [$99; shop.camelbak.com]