Visco Elastic Foam. Base Foam. Medium Tension. Micro Quilted. Airsprungs Shadow divan is part of the memory master collection & it has a medium tension. The divans mattress combines two lots of foam together it firstly has a top layer of profiled visco elastic foam then combining with a lower layer of base foam therefore giving complete body support. The Shadow from Airsprung has a micro quilted finish & the base is available as a contemporary, platform top or sprung edge base with a multiple choice of drawer options. Please note headboard is not included