Cutler and Gross 1266 Classic Zero G Titanium refers to

Zero G Titanium refers to "zero gravity" or "weightlessness"

Extremely lightweight

Gradient Brown Lenses

Lightness and high impact resistance

Other details include hand lacquered temples and the Matsuda "M"  stamped on the temple tips

Cutler and Gross 1266 Classic Zero G Titanium refers toDESCRIPTION Palladium Plate Color Pale Blue and Pale Green A palladium plated timeless aviator pair of sunglasses featuring a delicate metal framework and adjustable nose pads. Gold Plated Pale Light Blue and Pale Pink A gold plated timeless aviator pair of sunglasses featuring a delicate metal framework and adjustable nose pads. Handmade in Italy Delicate metal construction Adjustable ceramic nose pads on goose neck pad arms