Put over knees and felt good.
Put it in 1200 watt microwave for 30 seconds. Took out and rubbed gel packs around. Then put back in for another 30 seconds. Took out and rubbed gel packs again. Then put it in another 30 seconds. Pulled out and was just a little too hot for about 5 minutes. Put over knees and felt good.
Rating: 4 stars