This down mattress topper is heavenly. It is so comfortable that I look forward to going to bed every night. My mattress is 10 inches tall and now with this topper it is the perfect height for my bed. This topper comes in a sealed package so when you first take it out you can’t lay on it for 72 hours so that it can inflate properly. This topper has made my bed so much more comfortable. I wish I had gotten it sooner!!