Created by Vispring, Signatory is a mattress made with two layers of pocket springs, cotton, platinum-certified pure Shetland wool, hand-carded Moosburger horsehair, blend of pure Shetland wool and cashmere. Signatory is a generously padded mattress, quilted with handmade wool bows and inside a double layer structure of pocket springs covered in pure calico cotton and arranged by hand. The tension of the springs can be chosen from soft, medium, rigid and extra rigid.The edges are also padded with coir and wool fibers and for maximum strength and quality, they have 4 rows of hand-made side seams.Clearly there are 4 side handles to facilitate movement and cleaning and the entire upholstery is equipped with a new ventilation system.