DALIX Womens Gradient Tone Glasses Frames Eyeglasses 51-17-137 (Black, Purple) composite frame plastic lens non-polarized Lens width: 51 millimeters Lens height: 35 millimeters Bridge: 17 millimeters Arm: 137 millimeters SIZE: Eye: 51 MM X Bridge:17 MM X Arm Length:137 MM Vertical B: 35 MM Superior Material: composite Rx-Compatible: The Special Grooves of this Frame allow you to replace the lenses of this frame with prescription lenses from your eye doctor/optician Accessories: Hard Carrying Case & Micro Dust Cleaning Cloth Provided with Each Purchase Color: Black-Gradient