This Review Title is Soothing and relaxing and the content is: These rocks have helped me so much. I have a chronic hip and back problem and arthritis as well. I have been hobbling around for weeks , even after physical therapy. I used these once and was 80 percent better after the first usage. They are beautifully presented in the clam shell . They get hot enough after 12 to 14 mins. They stay warm for about 10 to 15 mins , which is a bit of a disappointment but they warm fast if you want longer treatment or to just leave them on your body until they cool. Very soothing..There are other information for this review, one is This reviewer did not purchase it and the other is 0 people think this review is helpful.