dumos memory foam mattress topper king, 4 inch thick gel infused bed toppers for queen size bed, soft mattress pads for sleeper sofa, rv, camper, certipur-us certified, blue blue 4 inch-king is up for auction in Home & Kitchen. The current bid is $1.00, 99% below the $74.95 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.