Feature: 100% brand new and high quality Features Transforms regular glasses into sunglasses. Great for those who already have a pair of prescription glasses and do not want to spend more for a pair of prescription sunglasses Easy to clip on glasses (not suitable for rimless glasses) Polarized lenses will be helpful for your safe driving or any other activities under the sun How to choose the right size: 1.With a ruler to measure the length and width of you glasses 2.Select the clips should be larger than the size of the measured 3.If you like a larger Polarized lens you can also choose larger size Note: 1 inch=2.5cm Sells the commodity take the material object as the standard 1.Due to the hand measurement, there have size error about 1-2cm 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the photo and the actual item could be slightly different