The M1 Performance Mattress provides truly balanced comfort with a satisfying “just right” feel. A first step in building your Performance Sleep System, the M1 combines our Boost and React specialty foams to create a smooth, adaptive surface with elevated support.FIRM FEEL - Conforming Support - Featuring a 1.5" layer of ventilated React foam technology for conforming pressure relief, this firm mattress is designed for deeper, more restful sleep.MOISTURE WICKING COVER - Stay Dry throughout the Night - Our Dri-Tec moisture wicking cover is engineered to keep your child dry throughout the night, while reducing sweat and heat buildup.MOISTURE WICKING COVER - Stay Dry throughout the Night - Our Dri-Tec moisture wicking cover is engineered to keep your child dry throughout the night, while reducing sweat and heat buildup.Durable Support Base - Each mattress consists of a high-density, durable base that provides foundational support for added comfort.Ideal For: Warm/Netural Sleepers - Prefers Memory Foam Feel.Product W: 39 H: 10 D: 75Package W: 18 H: 18 D: 41Weight: 42 lbs Mattress M1> Moisture Wicking> Breathable> Conforming Support> CertiPUR-US Certified FoamCare: Spot Clean OnlyBreathable Material: Air-X BreathabilityZip-off: NoFirmness: FirmShape: RectangleFill Material: Ventilated React+ & Boost-X Air FlowCover Material: Dri-Tec Top Cover TechnologyCase Qty: 1Case Size Cubes: 7.688