Nice materials but not perfect
This is one of the nicer heating pad/menstrual relief devices, because it is made with thicker, softer materials. Other ones we tried were very thin polyester. It's awesome that it actually comes with a battery pack, since most devices do not these days. However, I wish that it was charged with a USB cable instead of a proprietary charger that you now have to keep track of. Since this is battery operated, it doesn't heat up as fast or as hot as a plug in heating pad, but it does provide nice warmth for comfort.
Rating: 5 stars