Review on Moist Heat Therapy Wrap With Ties For Back, Hips, And Shoulders - Activated By Microwave. Measures 7" X 12". by Scott Koeck

This product works exactly as advertised. It is well made, and provides moist heat for about 30 minutes. Reviewers who say the product is dangerous because of burned material have obviously over-heated the belt. You start at 1.5 minutes in the microwave and then check it. All microwaves are different. I found 1 minute and 40 seconds hot enough. I would not use with a microwave without a turntable unless you stop it and move it often. My doctor recommended moist heat for lower back pain.