The Beautyrest Altman Firm Mattress is a great choice if you like the feeling of sleeping on the bed rather than being hugged by it. It has a firm feel, with gel infused foams for pressure relief where you need it most. The Altman utilizes 815 Density Pocketed Coil technology as its supportive core, with the individually wrapped coils shifting with you as you sleep to keep you properly supported. Gel infused foams provide excellent pressure relief, and feature an open cell structure to promote airflow and help prevent heat buildup in the mattress. The surface of the mattress features a natural fiber containing a silver additive. It is chosen for its anti-microbial properties, and helps prevent the growth of odor-causing bacteria, mold and mildew in the foam to help keep your mattress fresh.Dimensions: Twin: 39 W x 75 D Twin XL: 39 W x 80 D Full: 54 W x 75 D Queen: 60 W x 80 D King: 76 W x 80 D Cal King: 72 W x 84 D.BR Warranty.Comfort Level: 2.