Sleeplace 10 Inch Tight Top Cool Gel Layering Innerspring Mattress 10sm01 (Queen) 2.2mm, 7.5 inch Dura coil system with exceptional durability 1 inch 8 ILD soft memory foam reliving body stress. Heat Treated spring with superb constant elasticity 10 years Limited Manufacturer Warranty I Gel Infused I Gel : Performance Material to lower temperature Infused Gel Particles sprayed Memory foam