Hello! I am selling this Gel Memory Foam Mattress topper that was purchased new and used for a little over a month. When it was in use, it was under a mattress pad and a fitted sheet. The dimensions are 69"x79" which is not a typical bed dimension. I had it on my King bed and it was about 3" short on either side, but that didn't really bother me. I would recommend it for a Queen, Full, or Twin as it could easily be cut down to size. Selling because I changed up my bed situation and do not need it anymore. Thanks for looking!