. *Mattress Springs:2,664 luxury pocket springs in 50 150cm, two layers of 1.32mm Vanadium steel springs, 50mm in diameter, sewn in individual calico pockets hand-formed into a honeycomb-nested unit. *Mattress Border:23cm deep with four 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, 450gsm hand-opened and hand-teased long-stranded horsetail enclosed in a hair-proof cambric cover.Layered with 600gsm hand-teased real Shetland Isle fleece wool and 200gsm cashmere, overlaid with 900gsm 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. .