It smells so much that you can't stand in the room! Rubber and petroleum with chlorine. I haven't figured out if it's the material or the water that smells like that. Also, if it smells like that without using it or when it heats up... And I can't understand why since I received it and plugged it in, it smells throughout the house. I use it at night for a little while and the rest of the 24 hours, I keep it on the balcony hoping it will lose its smell over time... What can I say... Poison... As a heating pad, it does its job even though it doesn't heat up as much as I would like. If I knew about the smell issue, I wouldn't have bought it at all

Excellent! Very good quality and performance in heat. I put it on my feet at night when they freeze and sleep perfectly. Awesome because it doesn't have a cord...