I had read the description before buying but I was still surprised by just how lightweight this heat pad is. I used to use a hot water bottle all the time and though the heat helped with my endometriosis pain, the weight of the bottle was uncomfortable pressing on my sore belly or back. This device is so much better! I highly recommend purchasing it.
My only complaint, and the reason I took off one star, is that I wish it came with some sort of belt or way to wear it around your lower back because period pain is not just felt on your front. Additionally, it's easy enough to wear the head pad under skirts or pants by tucking it in your waistband but if you have a dress on, you either have to use the Scarlet pocket briefs or tuck it into your undies, which I would prefer not to do. Hopefully, Scarlet make this accessory in the future. Still, I'm happy I purchased this product and think it is well designed.