Puts out heat.

Verified Buyer Reviewed by Anaguma from USA on Sunday, February 22, 2015
The toe warmer has a circular shape on one end to fit better in shoes/boots. It also doesn't have as much of the iron "warmer" stuff when compared to the Grabber hand warmers. It therefore doesn't get as warm as the hand warmers. On really cold days, the toe warmers didn't keep my toes warm in my ski boots, but it kept them from being as cold. The next 0°F day I tried a hand warmer in my boots. It took a couple of tries to get the larger rectangular shape into the toe of my ski boots comfortably, but they kept my toes warm. I'll have to use the toe warmers on slightly warmer days. Both types worked better under the toes. The toe warmers also have a peel-away adhesive on one side to better keep them in place. The adhesive was good for 1 placement on SmartWool socks, and after that, it didn't stick.
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