Eyewear Glasses Ray-Ban Ray-Ban RX2180-V × Close Size guide Lens height Arm length Bridge width Lens width Your frame measurements (mm) 49-21-145 Frame size is determined by the three key measurements found inside the frame arm: lens width (from 31-60mm), bridge width (from 12-31mm), and arm length (from 115-155mm). Your lens height (mm) 46 Lens height is essential for multifocal prescriptions, such as Progressives, which require a minimum measurement of 28-30mm. They are also recommended for Rx sunglasses. Arm length 145mm Previous Next 49-21-145 Size guide Black Black View measurements Measurements (49-21-145) Size guide Out of Stock RX2180-V Ray-Ban MyFit Progressive Eligible Sunglasses Eligible Plastic 49mm 21mm 145mm 140mm 134mm 46mm The rounded vintage-inspired look of the Ray-Ban RB2180-V eyeglasses is universally flattering and enduring. The glossy acetate finish adds a hint of sophistication to the classic. Includes Free Shipping & Returns Acetate Acetates are strong, lightweight, flexible, and allow for a myriad of unique patterns and finishes.