Coolvie King Mattress 12 Inch Hybrid Mattresses King Size Bed Mattress in A Box Mattresses Individual Pocket Springs with Memory Foam Layer Provide Motion Isolation & Cool Sleep King 12inch is up for auction in Home & Kitchen. The current bid is $140.00, 64% below the $389.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.