I purchased a new mattress (also from Overstock.com) and decided to replace a lot of the bedding. This mattress pad is large enough to fit over the bigger mattress but not so large that it leaves wrinkles on the bed. I have a heated mattress pad (also from Overstock.com) underneath this pad and it works perfectly. I will be curious to see how warm this pad is once I take off the heated mattress pad for the summer. I sometimes get overheated in the summer so it will be interesting to find out if this mattress pad works for me. So far so good.