KONGDY 30 Count Heating Pain Patches, Heat Therapy Patches for Back, Neck

My new wife used these on her back to keep warm during our wedding ceremony outside. No issues.

Excellent for shoulder pain! I applied it to my right shoulder and within a couple of minutes the pain was nearly gone. They heat up within a minute or so and stay in place for hours. I have tendinitis and I am so happy that these work so well.

It is good. Comes with a lot. Some bags may come hard and that’s the only problem but It was only 2-3 of them. Stays warm for a long time.

high quality and long duration. Recommended for east coast winters

Too hot on bare skin for some I'm sure, and makes you sweaty under clothes which could result in the adhesive coming unstuck. Definitely works but be careful using directly on bare skin.

product was easy to use but it only warmed a little bit. I'm hard pressed to find a use case. to reduce clutter I have discarded them. cannot recommend.

Excellent for back pain or anywhere else. Stays warm up to 12 hours. Do not put directly on your skin. Attach to your clothing. Soothing relief.

I am not impressed with these heat patches. The packaging is a little misleading (what I got was a little different from the images shown on the product page now; hopefully the product page is updated to what the latest product ships with). The packaging for mine shows a picture of the heat patch on a shirtless back, but it does clarify (with a typo) that it's meant to be attached to the shirt. Unfortunately, the adhesive barely sticks to my cotton T-shirt. It also didn't really get too warm, and didn't stay warm for that long and I was simply working at my house for about 3 hours. I'll have to give it another try on my back, but it didn't do much for my arms.

They are not super warm, but very long-lasting and stick so well on clothes. It took about 10-15 minutes for them to warm up.

Work so well and don’t have a strong smell.

Heats up very fast and really hot. I only wish I can place directly on my skin.