DynastyMattress New! 12-Inch Cool Latex Mattress-King Size 2" Natural Cool Latex Layer and 2" Comfort Foam Layer, 8" Base Foam Support! Strong support base will ensure that the bed never sags or flattens out. Natural Latex keeping you warm in the winter and cooler in the summer! All natural properties and pressure relieving capabilities! washable zipper cover. 120 Day Trial Satisfaction Guarantee. 20 Year Limited Warranty! Feel: Extra Firm