This is the entry level version of the grey wavy longwave mattress at just deep. At its core, is the traditional double insulated -gauge open coil spring unit. This is topped with a layer of polyester comfort fillings, a layer of visco-elastic memory foam and finally the design quilted panel. A single sided mattress that will give the best performance and lifespan if rotated regularly. The mattress is compressed, vacuum packed, rolled therefore it does not come with side supports.