Grabber Toe Warmers, with Adhesive, 2 per pack. These single-use heat packs keep your toes warm and toasty on the coldest days of the year. Ultra thin and feature adhesive on one side so they'll stay put in your shoes. Air-activated warmers work by simply shaking the pouch and will keep your toes warm for up to 8 hours. They are perfect for hunting, outdoor events, camping, working in the yard, hiking or anything that requires extended periods of time outdoors. Average temperature of 97 degrees F. Made in the USA.