Melanin-infused polycarbonate lenses; Protection from harmful HEV light (98%) & UV (100%) while delivering eye relaxation and accurate color perception; Premium scratch resistance & impact protection lens; 6 Base lens curvature; Mold injected bio-resin frame for light weight and superior durability; Optical grade 5 barrel stainless steel hinge for strength; Teflon coated hinge screws for durability; Includes Repreve microfiber cleaning cloth: produced from recycled plastics; Made in Italy