I have a fairly new Gell mattress topper ( Queen Size ) from Costco to sell. I had this on my truck camper mattress for added comfort. It was super comfy and made a huge difference with sleeping . I have sold the camper now and no longer have a need for it. It is 2 &1/2 inches thick, had minimal use, in great condition & clean (as new). It was $ 200.00 dollars new...... It Is located in Saanich Royal Oak area.