What a difference this made to the bed, both in comfort and warmth. NOTE: it is not like other toppers the have elastic or ties, this just sits on top of your mattress under the mattress cover. BONUS: it is about the size of a queen size feather duvet cover and for $26 could easily be used for that. I as going to pick up a spare one, because you just can't get duck duvet covers for that price.