. *Mattress Springs:1,476 luxury pocket springs in 50 150cm, 1.42mm Vanadium steel springs, 51mm in diameter, individual sewn calico pockets, 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 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 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.. .