SVPC SENSANITE POCKET 800 MATTRESS is a reliably supportive system to provide the best possible comfort and support for the sleeping body. This high-quality mattress combining an 800 spring system and upholstered in a quality knitted micro-quilted fabric cover and supportive memory foam provides support and natural movement throughout the night. 800 Pocket Springs. Knitted Micro Quilted Fabric. Turnable.