serta thermagel 2-inch gel memory foam mattress topper, twin | 2 inch twin gel memory foam mattress topper, thermagel cooling, pressure relief, certipur-us certified, made in usa is up for auction in Home & Kitchen. The current bid is $3.50, 94% below the $59.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.