Rectangle Polarized Clip-on Sunglasses Size:54mm Width x 37mm Height It is usually okay for

It is usually okay for the flip up lens to be a little wider or higher than your glasses

your glasses need to be similar in shape with your frame rim measuring less than 3mm's thick

54mm Width x 33mm Height

5 1/2 Inches Width x 1 3/4 Inches Height

One Lens 56mm Width x 40mm Height

Rectangle Polarized Clip-on Sunglasses Size:54mm Width x 37mm Height It is usually okay forFor the rectangle shape to fit your glasses, your glasses need to be rectangular in shape with your frame rim measuring less than 3mm's thick. Measure one lens of your glasses carefully to the outside rim of your glasses width x height. The rectangle shape needs to be nearly the same shape as your glasses and the size clip on sunglass needs to be the same as the measurement of your glasses or the next size bigger. All of our sunglasses are rated UV400