Tired of stumbling off curbs or bumping into other pedestrians while consulting a map on your smartphone? When you wear Lechal Insoles ($100), a gentle vibration in one shoe or the other will tell you when and in which direction to turn. Just enter your destination into Lechal's GPS app, and let your phone do the navigating. The batteries for the vibrating pads last about 15 days on a charge. Besides steering you from place to place, the insoles can also act as activity trackers, monitoring distances traveled, steps taken, calories burned, and more.
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