TH 1756/RE are part of the new designer Bio-Based capsule collection by Tommy Hilfiger. This range is sustainable, bio-based and biodegradable. All materials used are natural and from a biodegradable origin. The raw materials used in the M49 formulation are Cellulose Acetate derived from wood and a plasticizer ester base of citric acid derived mainly from starch of vegetable origin. Make renewable possible, whilst looking great at the same time! These panto shaped Grey frames are available to buy online. All of our glasses include single vision lenses as standard and a cleaning cloth and case. The lens width on this model is 49mm.