A quality firm mattress with patented Ncompass wrapped coil system for spinal alignment and a perfect sleep surface from edge to edge. Zoned convoluted foam for added support. Adjustable bed friendly. Luxurious soft feel at a great price. All the features of the Carson Firm with added gel memory foam and a bamboo cover that has moisture wicking and antimicrobial features. All the features of the Kingston Firm with added comfort layers and zoned convoluted toppers.