Tuck these handy heaters into your coat pocket or inside your gloves to keep your hands toasty warm – even on the coldest days! The lightweight, rechargeable heaters warm up in seconds and have 3 different heat settings with the highest setting at 131ºF. They stay warm for up to 7 hours and are great for sporting events, dog walking, skiing, hunting, working outside and other cold weather activities. Includes storage pouch, wrist straps and USB charging cable. Plastic, aluminum, fiberglass and electronics. Each measures 3 1/2"L x 2"W.