Pocket Coil System – Strong high tempered pocket coil core helps relieve pressure points and align the spine. Layered with latex and fully encased in premium foam for added comfort. Foam Encased Edge Guard – 4-inch hard foam perimeter for added edge/sitting support, with a ½-inch quilted border. Quilted Top Comfort – Ultra soft quilted tight top with traditional waterfall edging. Soft Quilted Fabric – extremely thick quilted fibers provide an ultra plush sleeping surface.