First Voice TS-4516 Disposable Instant Hot Pack, 9" Length x 5" Width (Pack of 18)

I tried to use two of these this week and found that they were almost impossible to squeeze to get the fluid to mix with the chemical to make the pack hot. I'm pretty strong and I've never had one of these not be easier to use. These things suck and I've tried to use about 6 (six) of them since they arrived and they're impossible to use. Will not be buying these again for sure and I'm thinking about asking for my money back o the remaining pack that I haven't used yet. DON'T BUY THESE HEAT PACKS!!!!

Listen... my daughter has sickle cell and hot packs are the only thing that sort of calms her down while her pain medicine kicks in when she is having a pain episode. We usually take a bunch from the hospital. But, I decided to order these after another brand I ordered fail to stay hot after 30 seconds. Anyway! These things get HOT!! She can’t even use them right away... she has to let them cool down a little which is awesome! They stay hot for awhile and are EASY TO POP IF YOU FOLLOW DIRECTIONS! I have never to subscribed to ANYTHING on Amazon... but I definitely came back and subscribed to receive this monthly. They work better than the ones from the hospital!!! I’ll post a video of me popping one later... I hate to waste one at the moment.

I don't normally write reviews but need to on these Hot Packs. THEY DO NOT WORK. Purchased them for my wife to use on her back during a 6 day car trip. Tried 4 different ones following exactly what the pack directions said. "Hot" isn't the wording they should be using. Don't waste your money.

I ordered 18 hoping they would work as advertised. My wife had a cramp. And we tried the first one. Absolutely nothing, no heat at all. The next day I tried the remaining 17 and not one heated up!! TOTAL WASTE OF TIME AND MONEY and I returned the whole box. Must have been frozen or overheated I transport from China

So I Bought this a while ago but just opened the box yesterday. I noticed right away there was white powder in the box. thought maybe one had gotten cut when I opened the box so I looked at all the top bags and all had a small hole where the seal comes together at the top center of the bags. I tossed them all! Wish I had opened them all earlier so I could have returned them.

Great for small injuries. I was given this pack at the hospital emergency room . It helped tremendously. I went on amazon and found them . I am completely satisfied.

I needed a heat pack that I could take with me on the go if my back started hurting. The package says it stays hot for 30 minutes but is actually about 15 minutes. It works fine for when I am out so I am not complaining too much. For the price, it is fine for my needs.

Item arrived on time & as seller described. Works very well, just that the edges of these bags kind of press into the skin when using on my back.