Hi! I’m responding to an old post you may have forgotten about.

I don’t know exactly which ones you’ve seen, but I have this back brace thingy. I use it for the back pain I get from endo more than abdominal/pelvic cramps, so take my opinion with that in mind.

I was also amazed at how well it actually heats up. I figured with no power source it couldn’t actually get hot, but after about 15 minutes directly on my skin it heats up, then after about 40 minutes gets so hot it’s unbearable.

I mostly use it as a back brace with a shirt under it so it doesn’t heat up, and it’s a lifesaver while I’m traveling both for the back support and as a makeshift heating pad when I need it.

This might not be at all what you were looking for but I was searching for heating pad reviews in this sub and came across your comment so I thought I’d give you a different opinion!