This 13.5 gauge bonnell sprint unit mattress, this Deluxe Sepi-Orthopadic Mattress provides a 900gsm spring insulater pad and 600gsm polyester filling tohelp you get the best night\'s sleep. With high quality stitch quilting, and an oyster damask ticking this bed provides the maximum semi orthopaedic comfort level you need. FEATURES:• Fabric : Quilted Damask• Material : Bonnell Metal Spring Unit• Made Exclusively in the UK• 13.5 Gauge Bonnell Spring Unit• Rod Edge Supports• 900gsm Spring Insulator Pad• 600gsm Polyester Filling• High quality stitch quilting and an oyster damask ticking• Quilted border with air vents allowing fresh air to circulate through your mattress• Mattress depth - 23cm DIMENSIONS:• Height : 23cm• Width : 137cm• Depth : 190cm