Hot Love by Cal Erotics is a must have for cramps and cold nights. The main problem I had with it was boiling; I thought I had boiled it long enough, but when I let it cool down it solidified again. Remember to never let the water boil dry or to leave the packs unattended.

The second problem was that when I received these the cardboard box was already opened, although the actual plastic package with the product was unopened. I had to throw my box away since it was so flimsy. It came with instructions and they were easy to follow.

You get two reusable circular gel packs in the box. Cracking the coin sets off a chemical reaction that makes the gel pack very warm - this can also be a fun chemistry lesson for kids. Be aware that the chemical/crystallizing action makes the packs harder and harder as time goes by; after 30 minutes or so you will just have a pink rock. These are super useful and I am sure I will find many uses for these.

So far I have used the packs as a hot stone massage and also just for warmth at night. They are pretty durable, so I don't have to worry too much about them breaking. However, the plastic around the gel packs (where the two pieces of plastic meet around the edges) is a little bit itchy if it hits your skin or rubs against it the wrong way. I am sure with time the edges will get softer, though. These packs are small and compact but pack a punch; they start out pretty hot, and were actually too hot when I first used them on my boyfriend. I suggest moving them around frequently, because when I let the gel pack sit on one part of the skin for too long it was just too much.

My boyfriend likes these so far, but be careful when first activating them as they can be too hot for comfort, unless you like a lot of heat.

I still like this product, however I am currently having a hell of a time trying to get it back to its original state. I have boiled it, it turned to liquid and then the next day it was as hard as a rock. It could just be my boiling skills or it could be defective. Overall, still a good buy just boil it a little longer than you think.