Purchased the ChiliPad™ in the fall of last year. Just started using it this year and can’t believe how wonderful it is. I sleep so well! I would have to set my air conditioner down 6 – 10 degrees to sleep this comfortably. Since childhood, I have always been uncomfortable during the hot summer. Since i purchased the ChiliPad™, uncomfortable sleep is nonexistent. I had put off purchasing the ChiliPad™ because of the expense: after experiencing the sleep benefits, I wish I had not delayed my purchase! I cannot begin to express how grateful I am to have found the ChiliPad™: it truly makes a huge difference in my life. I am going to order the small one to take with me when I go away.