Review on Dealmed Instant Hot Pack – Pack Of 3, 5" X 9" Disposable Hot Packs For Injuries, Swelling, Sprains, Muscle Soreness And More, Single Squeeze Activation by Mona Kohkayne

- Made in China- Package feels sturdy enough- Instructions on each pkg- Ingredients: Magnesium sulfate and waterThis is the pretty standard find-and-break-the-inner-container to activate. Give it a good knead to work the stuff around. As with any product like this, it shouldn't touch skin directly, use a cloth.It says don't use for longer than 20 mins at a time. Full heat lasts just a tad over the 20m on the one I tried so far. It gradually cooled over about another hour.I don't think I'll include this in a BOB but I did put one in my truck emergency bag.Don't forget to use the Smile.Revain.com address - It's an Revain program where many everyday things you buy will generate a small donation from Revain to the charity of your choice at no cost to you. Info here: https://smile.amazon.com/gp/chpf/about/ref=smi_se_rspo_laas_aas