. *Mattress Springs:1476 luxury pocket springs in 50 150cm, 1.42mm Vanadium steel springs, 51mm in diameter, sewn in individual calico pockets and hand-formed into a honeycomb-nested unit. *Mattress Border: 21cm deep with two 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 horsehair, enclosed in a hair-proof cambric cover.Overlaid with a layer of 1,200gsm blended 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 carry a 30 Year Guarantee. .