. *Mattress Springs:1600 luxury pocket springs in 50 150cm, 1.28mm Vanadium steel springs, 49mm in diameter, sewn in individual calico pockets and hand-formed into a honeycomb-nested unit. *Mattress Border:21cm deep with three rows of genuine hand side-stitching, horizontal handles, air vents on all sides, border edges upholstered in wool, hand finished with piped ticking. *Mattress Upholstery:Upholstered with 1,000gsm bonded Platinum Certified British fleece wool and cotton and 300 gsm British fleece wool; 900 gsm of cashmere, enclosed in a hair-proof cambric cover.Overlaid with 900 gsm of bonded British fleece wool and cotton.Covered with satin ivory Belgian ticking from the Vispring collection. Other options are available. Hand tufted with felt washers. All Vispring Mattresses come with a 30 Year Guarantee. .