5 of 5 people found the following review helpful
Verified Purchase(What is this?)
Had tried other brands and found a) they didn't get very warm (ie was hard to tell if they had gained warmth from your toes or the other way round) and what little heat was produced died after just 2-3 hours. However, these rather plainly packaged little fellas only claim 5 hours, but do that and maybe more and were so warm that when the sun came out and things warmed up a bit, I contemplated taking them out as they were getting a little too warm (and I get VERY cold feet)! Important to note that they don't have a sticky side, just a non slip foam one (which kept them in place really well and I personally prefer as the sticky version was ripping my socks apart when I took them off). Highly recommend.