I purchased this for my 8-year-old son's mattress, which he felt to be too firm and uncomfortable. He has used it for 3 weeks and continues to enjoy his bed more than before, however, this mattress pad has a plush surface which causes him to be overly warm now. I question whether it is a breathable fabric, but for now, we are compensating by wearing lighter weight bedclothes. Otherwise, nice fit and loft.