Cutler and Gross The Great Frog Bones Link Rectangle Opticals Colour:Black That is the measurement across

That is the measurement across one lens at its widest point

and Mykita's proprietary spiral hinge does the folding work without a screw to loosen over time

Two sizes are available: a 47mm or a 50mm lens width

fine-rimmed D-frame with a coronet bridge and double pinned

Best for sunny conditions

Cutler and Gross The Great Frog Bones Link Rectangle Opticals Colour:Black That is the measurement acrossFive colourways, one rectangle, and a name that does not exactly whisper. The The Great Frog Bones Link Rectangle Opticals are cut from acetate in a straight sided rectangular shape, with the clean horizontal brow that makes this outline so effective at sharpening softer features. Crystal Oil is the most unusual of the colours, dark and shifting in the light. Black is the graphic option. Havana is the warm mottled classic. Deep Blue is the subtle one.