dumos mattress toppers memory foam twin size, 3 inch thick bed topper pad cooling gel infused soft comfy padding breathable for sleeper sofa couch rv camper, certipur-us certified, blue blue 3 inch-twin is up for auction in Home & Kitchen. The current bid is $6.50, 80% below the $31.88 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.