The Kingsdown Hillstream Hybrid Plush Mattress is loaded with features to give you the perfect nights' sleep. From its cooling cover that gives 2x the heat disbursement to its dual lumbar support with Adaptive Foam, this mattress is an ideal blend of support and comfort. Supported by a multi-level 1700+ piece coil system, this model features this model features a 9" wrapped coil unit topped with micro-coils, lumbar support band, and layers of contouring foam for a truly unique feel.