Martini Stainless Performance M55 sunglasses Featuring Martini's New 8 Layer injected "Ultra Polarized" Lenses with "Hardshell" proprietary scratch resistant coatings, "AR" anti reflective treatment to reduce rear and side glare and an Oleophobic coating which includes a Hydrophobic treatment that seals the lens surface and reduces the adhesion of grease and water. This makes a lens very easy to clean. These lenses are the Best in the World! The M55 features an All Stainless frame with Optical spring hinges. Eye Size 60mm, Bridge size 19mm. Temple Length 130mm. This entire sunglass has a total weight of 17 Grams.