. *Mattress Springs:1720 luxury pocket springs in 50 150cm, 1.28mm Vanadium steel springs, 48mm in diameter, sewn in individual calico pockets and hand-formed into a honeycomb-nested unit. *Mattress Border:23cm deep with three rows of genuine hand side-stitching, horizontal handles, air vents on all sides, border edges upholstered with coir and wool, hand finished with piped ticking. *Mattress Upholstery:Upholstered with 1,000gsm bonded British fleece wool and cotton, then 1,200gsm long-stranded horsetail blended with British fleece wool and enclosed in a hair-proof cambric cover.Overlaid with a layer of 900gsm blended real Shetland Isle 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 carry a 30 Year Guarantee. .