ybyx full size mattress 12 inch, hybrid memory foam mattress with zoned pocket coils support and motion isolation design, strengthen edge support,certipur-us certified, medium firm in a box is up for auction in Home & Kitchen. The current bid is $21.00, 88% below the $179.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.