Cutler and Gross 1378 Blue Light Filter Round Opticals (Small) Colour:Crystal Peach on Striped Brown Titanium is why the frame

Titanium is why the frame feels lighter on the nose than its size suggests

the 51mm the more assertive one

Rose is the warmest of the four

Lens width is the measurement straight across one lens

Sizing: 46-22-145 means 46mm lens width

Cutler and Gross 1378 Blue Light Filter Round Opticals (Small) Colour:Crystal Peach on Striped Brown Titanium is why the frameSeven colourways is a lot of choice for one round frame, and the 1378 uses them well. Black and Striped Dark Green hold the sober end. Dark Turtle and Black on Havana bring classic mottled warmth. Crystal Peach on Striped Brown and Striped Blue Havana on Powder Blue show off the layered two tone work Cutler and Gross does so well, while Mud on Jet Engine Grey is the most industrial of the set. This is the small version, with a 49mm lens width. That is