We received our ChiliPad™ two months ago, and it really has been great. We have a mattress that is made with memory foam on the top (Beauty Rest black) and we were sweating all the time. I always dreaded going to bed, because I knew it would be a night of waking up sweating and tossing and turning. Now, I even go to bed earlier than usual, because I look forward to having a good nights rest. We also have been able to turn our room air conditioner way up, probably saving money on electricity. My husband feels the same way I do about your product.