This Bonnell spring mattress offers a pleasant feel and a comfortable sleeping experience. The fabric features a simple and clean look while being breathable, skin-friendly, and durable. The Bonnell spring system consists of interconnected steel coils in an hourglass shape, which are firm and stable to provide excellent support and longevity. The mattress is made up of several layers, including a foam layer, an insulation layer, and a spring layer. This combination provides a soft to medium sleeping feel and high sleeping comfort in all sleeping positions. Additionally, the mattress effectively absorbs sounds and vibrations caused by movement, ensuring a quiet and undisturbed sleep. The mattress is equipped with a long zipper at the bottom, making it easy to remove the cover for cleaning. The mattress cover is washable at up to 40 °C but should not be washed frequently. The mattress is compressed and rolled in a box, allowing for easy movement and setup in your room. Color: White, Dark Gray, and Black; Cover material: Fabric (100% Polyester); Filling material: Bonnell springs, foam, insulation layer; Dimensions: 140 x 200 x 18 cm (W x L x H); Firmness: Medium.