Solar Powered Water Bottle Cap
The cool new Solar Powered Water Bottle Cap transforms your water bottle into a full-blown lantern whenever you're caught without illumination. This handy weatherproof light snaps onto most standard 2.25" diameter water bottles, including Nalgene, Camelbak and GSI and features four super-bright white LEDs that cause the water-filled bottle to glow. You don't have to worry about lugging any extra batteries with you, because this light charges fast during the day, using a built-in high output solar panel on the lid. It's a great gadget to bring with you on your next camping trip or adventure into the wilderness.