IRIS USA Hand Warmers, Regular/Large/Jumbo, 30/60 Individual Warmers, Regular/Adhesive Body Warmers Up to 10/12/18 Hours Disposable Handwarmer Bulk for Hot Hands Feet Chest Back, TSA-Approved, Camping

This have major adhesive on the back. They get very hot. I don’t think they last as long as advertised but they last long enough. I will be purchasing again.

I bought a pack of adhesive 10 hr body warmers, but after 2 yrs, still in the plastic, they barely work. I stuck one on my chest (under jacket, on shirt) and I barely felt anything. They give off warmth, but not very much. I've used name brand ones before, and they give off a lot more heat. Very disappointed.

I use these for everything! Cramps, back pain, shoulder pain or yes even the cold weather. If close to your body they can last almost 24 hours!

I work in a cold factory and these keep me toasty

This is my third 60 pack box of these. The first two boxes were fine, I had really no issues with them which was why I got another. The 3rd box however, I am down to the last pack and literally TWO of them worked. Not two packs, two. As in ONE PAIR. There has been no difference whatsoever between having them in my boots and not having them. It has been extremely cold, in the negatives and my feet are ice cold with no noticeable signs of any heat coming from these things. Save your money and look elsewhere. I also don’t know why “heat level” has a green checkmark next to it. You all can ignore that because I said nothing in my review for that to happen. STAY AWAY!

These warmers have a good amount of heat for about 9 hours! They are very scratchy to the skin. The sticky side is great for placement in bra, men’s undies & in beanies or hoodies! These get hard as rock once they get cold. Great price point for product quality & quantity.

A must for when you are sitting in the woods not hunting in the cold because that is against there community standards!

These aren't good. At all. I opened like half of them back to back just to see if there was a fluke or something. They take forever to get "warm" and by warm I mean slightly warm, kind of, if you try really hard to notice. They only stay kind of warm for maybe 20 minutes. I couldn't imagine them doing anything in a pair of gloves or boots outside in the cold. You're better off just wearing extra layers of socks and a decent pair of gloves with liners. 2 stars because they technically did get warmish, kind of-sort of.

Useless.