yantan nit exact but similar to yantan twin mattress10 inch: medium firm hybrid twin size mattress for contour comfort, spine support, pressure relief, memory foam and zoned pocket springs twin bed mattress in a box, certipur-us 10 inches twin is up for auction in Home & Kitchen. The current bid is $2.50, 98% below the $129.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.