The Atlas Luxury Firm Mattress, a part of the Genesis Mattress Collection, is just one of many models available from Sherwood. Manufactured in their Midwest facility, the Atlas Luxury Firm Mattress offers superior support, as well as durability. Within the durable, body conforming 4-way stretch knit cover, are multiple layers of soy based quilt foam. Plus, a 460 double offset, Verti-Coil innerspring support system, which features alternating rows of coils for greater edge support of the mattress. Yielding improved perimeter consistency, it provides greater surface coverage for the mattress as well. Please note, this mattress model is available in either twin or full size only and offers a 5 year non-prorated manufacturer's warranty.