*Mattress Springs:1254 luxury pocket springs in 50 150cm, 1.52mm Vanadium steel springs, 56mm 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 1350gsm bonded British fleece wool and cotton, overlaid with two layers of 900gsm 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.. .