Coach HC6040 Brooklyn model in the Tortoise/Pink colorway. The numbers printed on the inside of the temple (arm) represent specific structural measurements in millimeters: Frame Measurements (52 ☐ 16 135) 52 (Lens Width): The horizontal width of one lens at its widest point. 16 (Bridge Width): The shortest distance between the two lenses across the nose. 135 (Temple Length): The total length of the temple arm from the hinge to the tip that rests behind your ear. **Please note: Prescription eye wear. Prescription lenses will be in frames when purchased. Purchased in 2020 with incorrect prescription. Tried on once. Found out too late to return. Never been worn. No scratches.**