. *Mattress Springs:1720 luxury pocket springs in 50 150cm, 1.28mm Vanadium steel springs, 48mm in diameter, individual sewn calico pockets, 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 protective lambswool, finished with piped ticking. *Mattress Upholstery:Upholstered with a wool spring protector pad, then 1000gsm bonded British fleece wool and cotton, plus 1200gsm long-stranded horsehair, enclosed in a hair-proof cambric cover and finally overlaid with 200 gsm bamboo and 1200gsm blended British fleece wool and cotton, hand tufted with felt washers, covered with satin ivory Belgian ticking from our Collection. Other options are available. All Vispring mattresses carry a 30 Year Guarantee.. .