The Sersper 12" Medium Hybrid Mattress combines comfort, pressure relief, and durable support for all sleep types - Featuring a breathable knit cover and our proprietary AeroChar™ bamboo charcoal-infused memory foam, it contours to your body, absorbs odors, and keeps your sleep cool - A high-density transition layer and pocketed coils provide 5-zone support, minimizing pressure points and motion transfer - Perfect for side, back, or stomach sleepers, it adapts to your body for a restful night - Compressed for easy delivery. Dimension