Extra Heavy duty Box-Top. Cooling Blue-Gel & HR sleeping technology. Luxurious soft touch micro-quilted knitted jacguard ticking. Luxurious high density Visco-Elastic Cool Blue Gel Memo-Flex and buoyant Polyurethane foam layers. High density reconstituted foam posture support core. Memory foam ventilation system. Zero Movement transfer. Hygienic and non-toxic. Allergy free. 2 Year Guarantee. 25 Year Service Warranty. No weight limit. Thickness 33cm.