The Signatory double bed by Vispring is a mattress available in different sizes and characterized by an internal structure with a double layer of pocket springs covered in pure calico cotton and arranged by hand. The upholstery fabric is of fine quality and the internal padding is made exclusively with natural products, with a blend of pure Shetland wool and cotton, hand-carded Austrian Moosburger horsehair, pure hand-combed Shetland wool with cashmere, a blend of pure Shetland wool and cotton.The upholstery is quilted with handmade wool flakes and also offers a new ventilation system, to allow the mattress to breathe and not to spoil it over time with humidity. Inside each double mattress there are 2664 springs, which can be chosen with soft, medium, rigid and extra rigid tension; so as to have maximum comfort over the entire surface of the mattress and maximum flexibility for every request and need.