Catra,

My husband had to return the pad today to my sister who needed it after she badly strained her shoulder shoveling. The pad isn't cheap, but it is effective. I think we need to buy our own.

The one below is a larger size, there is a smaller one. I think the smaller is fine if you have a small isolated target area, like your knee, neck, shoulder, etc. I needed the bigger one for my butt, hip area. The heat penetrates to the bone.

http://www.amazon.com/UTK-Features-I...sc+heating+pad