Warmee Self-Heating Warmer Combo Pack - 8+ Hours, Air-Activated Heat Pouch - Long Lasting, Safe, Natural, Odorless Warmers for Outdoor Activities, Winter & Travel

Very effective and useful product

Bought it for emergency use for a winter trek in Nepal. Used it. It takes some time after activation but continues to provide heat for 5-7hours. Good if you have a good sleeping bag, this can help give some warmth and less effort by body to generate heat.Recommended.

It works for 12 hours or more and it helped me a lot for my trip to kashmir the temperature use to drop till 9 degree but with the warmer handy it helped a lot.

I used this product and wherever there was snow this was so useful but since it’s chemical it is not advisable to be careless of its usage

This is an awesome product and lasts more than 12hrs. My family used it in Jan trip to Kashmir and helped them. I used the remaining pouches in Gurgaon at home and was really good. These are disposable use items but potentially can be recycled in terms of the active charcoal used in plant soil.

I bought this reading g reviews n here is my take on thisUsed in kashmir ,kept in Pocket of jacket. It heated up as per the instructions. It becomes quite warm . If u have a pocket by chest area its gonna keep it warm .ad its a spot warmer . M ok with the product . I bought 2 packs for a gud price

God Utility, takes some time to get warm, but stays warm easily for 5-6+ hours.

Brought this one for winter trip to sikkim in Dec 2021 and lucky this was the sole survival kit for us as we were stuck up in north sikkim mountains for 3 days with out electricity and in freezing -6 degrees. with no gens to back up power and room heaters, these body warmers were our reason to stay warm and make it alive out of the valley.Must have product if you are planning to hiher altitue regions in December winter weather. one satchet was warm enough for more than 24hrs and after that you need to discard it but its totally worth it.