Iconikal Reusable Click Activation Hot/Cold Pack, Ultimate 7-Piece Set

Good heat and heat retention.

These are so useful after a long day you don't have to wait for a heating pad to heat up and the best thing is you can throw one into the freezer and use one for heat as it gets cold. By the time the heat is done the one in the freezer will be ready

When I activated them I put them hot water and submerged. They activate easily to touch when moved so it’s very frustrating. Like time wasted.

All the packs are a great size. I have had similar ones in the past that cost 3x as much and worked about the same. My only issue is that the hand warmers need to be snapped several times to work. It does say it might in the directions however sometimes I just can't get them to work. The three larger sizes I have had no issues with.

easy to use

Great product!

I use them for my back there great

I tried it on the first time and the heat is good. After that I wrapped it in a towel and kept it on boiling water. It brust, had a hole in it and the liquid started leaking. 4 of the items worked well with towel wrapped while heating but one brust. I dont know if I'll be able to get a refund/exchange for it.