After I Buy Ammex HW Heatworks Air-Activated Emergency Hand, Pocket and Glove Warmers (Box of 40)The Ammex Heatworks warmers work very good in extreme temps. I have used them in -15 temps and my hands, feet and pocket areas have remained very warm. They are very thin so they do not take up a lot of room and are easy to activate as well. They seem to last a full day of work around 7-8 hours which is nice because a lot of warmers last around half of that.
Overall this is a very handy product to have when you need extra warmth and I would recommend this to anyone who is looking for a good hand / pocket / foot warmer. Longest lasting warmer I have found.
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