Built for balance, the Sterling 11 in. Hybrid Mattress blends breathable comfort with a clean, modern finish. The soft knit cover has a subtle texture and two-tone piping that gives it a polished, structured look. Inside, layered air foam and high-density support foam relieve pressure and encourage airflow. At the core, individually wrapped pocket coils respond to movement and help reduce motion transfer-ideal for couples or restless sleepers. Reinforced foam edges help the mattress hold its shape and provide a more supportive feel across the surface. Designed to adapt to different sleep styles, this hybrid mattress works great in master bedrooms, guest rooms, or growing teen spaces. Just unbox, let it expand, and sleep comfortably within 24-hours. Size: california king. Material: Fabric.