This Starlight Beds Small Single White Zig Zag Hybrid Memory Foam and Spring Mattress combines both memory foam and a traditional 13.5 gauge open coil spring unit, helping reduce pressure points for increased comfort. Covered in a cool touch material for a softer sleeping surface and stylishly finished with a white border. With innovative technology, we are now able to source materials to help protect the environment. Memory foam adapts and conforms to the body and evenly distributes the weight across the surface. The main benefit of memory foam is to provide support and comfort by contouring the body which can help reduce pressure points and promote better spinal alignment. The coil spring provides good even support across the entire surface. This component has been used for generations due to its longevity, providing a longer durability life. Combined with memory foam for a great night's sleep.