The Posture III luxury Plush mattress set features innerspring unit with open, unknotted, alternating left and right hand turn coils. This mattress also features the Bemco’s Fibertron™ base cushion that adds durability and additional support. Fibertron is produced exclusively from man-made fibers baked in an oven to over 300° F, which removes germs, allergens and other contaminants. Fibertron is odor-free, mildew resistant, and hypoallergenic. Flex Foam dual edge supports, multiple layers of Bemco’s premium high-density and super soft foam, multi-needle quilted Fire-Tec™ mattress border and luxurious high-grade damask is tack-and-jump quilted to Bemco’s Fire-Tec™ barrier fabric.