The Kingston mattress is specifically manufactured to strict Crib 5 specifications thats required for hospitality and commercial industry. Its compulsory for the above to comply with BS7177 ignition fire regularity standards that go further than those required for domestic use. Upholstered in a 100 cotton cloth, the mattress features a micro quilted finish that secures the outer fabric to the surface layers below. The interior of the mattress is made up of a robust 13.5-gauge open coil spring system, with rows of springs running from head to toe. Each row is connected by a spiral wire, known as a helical wire, with a 6-gauge rod-edge wire around its perimeter to strengthen its border. As its a double-sided mattress, we recommend that its rotated from head to toe and flipped over regularly for enhanced support and comfort.