DB OF5035 by DbyD. This frame is part of the Bio-Acetate Mazzucchelli x DbyD collection. The DbyD brand has partnered with renowned Italian manufacturer Mazzucchelli, the world leader in bio-acetate production, to design a line of optical frames using M49, a bio-acetate that is responsibly sourced and biodegradable. This stylish softly rounded rectangle/square shaped Havana coloured acetate plastic frame includes single vision lenses as standard and a cleaning cloth and case. The lens width on this model is 51mm.