This Bedra Bedding mattress features a unique construction that combines the traditional elegance of bonnell coil springs with modern comfort technologies. Each individually wrapped coil is made from high-quality steel, ensuring excellent durability and long-lasting performance. One of the standout features of the Bonnell Spring Mattress is its ability to provide just the right balance between firmness and softness. The precisely calibrated spring system delivers a medium-firm support, offering a supportive surface while contouring to your body's natural curves. *Please note that mattress comes in a vacuum packed packaging and requires 24 hours to fully expanded and shaped.