Mattress layers include: 2" memory foam (3 lbs. density), 2" super soft foam with pressure relief system and 4" high density foam base * Our patented pressure relief system virtually eliminates all pressure points to ensure a comfortable nights sleep * Bi-fold box spring simply unfolds and you lay your mattress on top; The steel frame provides maximum edge firmness * CertiPUR-US Certified; Scent Evergreen is a green tea extract that naturally neutralizes odors from day one * Our patented pressure relief system virtually eliminates all pressure points to ensure a comfortable nights sleep; Limited 5 year warranty