The all-new, enhanced Serta Perfect Sleeper mattress provides even better pressure-relieving comfort and support. The Perfect Sleeper Boutique Firm includes the 1000 Edition Custom Support Coil System for exceptional support and reduced motion transfer, plus Serta’s BestEdge Foam Encasement technology, an extra-deep foam rail made to help reduce edge roll-off and extend the sleep surface. Serta Perfect Sleeper mattresses also have antimicrobial mattress protection to keep your mattress fresh and clean from odor-causing bacteria.