Experience restful nights with the super king bonnell spring mattress featuring comfort layers that blend reliable support and everyday ease. Durable 13.5g Open Coil Bonnell springs ensure even support and a slightly firmer feel, while the soft quilted panel top and recycled polyester comfort layers add both breathability and sustainability. Medium firmness suits a wide range of sleep styles and the mattress arrives rolled and boxed for effortless delivery, making it a practical choice for modern homes seeking comfort and convenience.