AVAILABLE SIZES. *Standard Single: 90 190cm *Standard Double: 135cm 190cm *King Size: 150cm 200cm *Super King: 182cm 200cm *Emperor: 202cm x 200cm . Technology. *Honeycomb-nested pocketspring construction *1600 springs in a 150cm 200cm mattress *Spring diameter: 40mm *Wire diameter: 1.2mm Borders. *23cmdeep with protective wadding *Horizontal handleswith concealed fine mesh air vents Mattress Upholstery. *Bonded wool and cotton Pillow-Top Technology. *Pocket spring construction: 1500 springs in a 150cm 200cm mattress Pillow-Top Upholstery. *Layered wool and cotton *Wool, pashmina, bamboo, and alpaca *Wool, cashmere and silk Finish. *Belgian Damask ticking 63 Viscose, 37 cotton *Hand tufted with felt washers . The J. Marshall No. 4 Mattress carries a10 Year Guarantee.