Back Pain Relief Patches (pack of 8pcs LARGE) 4+ hours of Heat Therapy Patches Safe and Natural Odour-Free Air-Activated, Long-Lasting Ultimate Substitution for Hot Water Bags for All Skin Types

Does not stay warm as long as stated in the claims

Need to increase the adhesive area and strength just enough so that it doesn't fall off from the heat material weight. Also immediately after applying if you need to readjust, the adhesive is completely non sticky. The heat becomes too much after sometime, so you are forced to remove it but can't restick it. Reduce heat and increase heat coverage area as it is for back.

Non sticky fall off immediately after some time

It's really efficient and useful, helps a lot, works for more than 4 hrs, just go for it ......

I had used this product a few times before and found it very effective. The recent ones looks like a cheap mimic of the older high quality product7

The gum used for sticking patch to the skin is very inferior quality and it is very sticky. It is very painful to remove patch from skin and damages the skin. It also causes allergy.The product quality varies from batch to batch.A good product destroyed by greed and poor quality process.

The product is just ok. Doesn't heat the area enough.

Absolutely avoidable product..It burns your skin..