Bedmaster Clay Premium Orthopaedic Coil Sprung Single Mattress - Firm Firmness (Small Double); FUNCTION: 15.5cm depth makes these mattresses ideal for bunk beds and day beds. Tested to BS7177., MATERIALS: A 12.g gauge ortho coil core with traditional fillings. Finished with micro quilted panels and haf tufting., CARE: A double sided mattress. Turn and rotate regularly. color: White