. *Mattress Springs:2,812 luxury pocket springs in 50 150cm, two layers of 1.32mm Vanadium steel springs, 49mm in diameter, sewn in individual calico pockets, hand-formed into a honeycomb-nested unit. *Mattress Border:25cm deep with five 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 900gsm blended real Shetland Isle fleece wool and cotton, 610gsm hand-opened and hand-teased long-stranded horsetail enclosed in hair-proof cambric cover. Layered with 200gsm cashmere, 200gsm mohair and 600gsm hand-teased real Shetland Isle fleece wool, overlaid with 1,200gsm blended real Shetland Isle fleece wool and cotton. Covered with satin ivory Belgian ticking. Other options are available. Hand tufted with hand-tied woollen tufts and twine. All Vispring mattresses carry a 30 Year Guarantee.