The mattress uses a unique spring fabric made of knitted fabric and memory foam. It is ergonomically designed with a built-in spring system for comfortable and skin-friendly. Good support performance provides targeted customization support for your skeletal system. Our springs are heat treated for tempering to prevent rust and deformation and have high durability. CASAINC Mattress 10-in Twin Hybrid Memory Foam/Coil Blend Mattress in White | WF-YMX-01-TWIN
