I am selling a 2" thick memory foam mattress topper with a velvety, zip-off washable cover. The brand is Sleep Innovations -- http://tinyurl.com/ngzdgsv. Originally purchased 4 years ago, and used successfully on the Stanford dorm Twin-XL mattresses, for a much more enjoyable and comfortable sleep experience. I have since graduated and have a larger bed, so no longer use this mattress topper. Was originally purchased for ~$300, selling for $100 obo. It is very clean and in excellent condition. Hoping it can find a new life in a good home!