Change the way you sleep with the Monarch Elite Firm mattress from Rainbow Bedding. This Two-Sided Monarch Rest Innerspring Mattress features a steel coil system that provides core support with its 12.5 gauge steel coils. On each side of this sits the Double Edge Guard Side Supports (that happen to be some of the strongest and most durable supports available) which help spread the comfort and support throughout the entire mattress with padding and a plastic protective mesh. A layer of Polyurethane Foam with High Density Perimeter Support provides further support while the top layer of Polyurethane Foam gives you nice, firm comfort right at the surface. This mattress is ideal for stomach and back sleepers and can easily be flipped, thus prolonging the life of the bed without sacrificing your comfort. Custom sizes are available.