The Sublime Superb by Vispring is one of the best mattresses of the company, made exclusively with natural fillings: pure British wool, hand-combed horsehair with pure Shetland wool, silk and mohair, a blend of pure Shetland wool and cotton. The upholstery fabric is of the finest quality and is quilted with handmade wool bows. Inside, however, the structure has a double layer of pocket springs covered in pure calico cotton, arranged by hand.The tensions of the springs can be soft, medium, rigid and extra rigid to satisfy all types of needs and offer the maximum possible comfort.The edges of the mattress are padded with coconut and wool fibers and have 4 rows of hand-made side seams, for maximum quality, precision and resistance even after many years of use.