The serta perfect sleeper midsummer night features a 825-coil density system this supportive adult mattress offers zoned comfort and pressure relief with a lumbar gel support band and cool twist gel memory foam that contours to your body. This unique design features cooling gel swirled into premium memory foam. This breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool contouring type of comfort with upgrades available with more cooling layers and support. Brand: SertaSimmonsBedding Size: []
