Skinny oval shape clip-on sunglasses range in size from 44mm to 52mm's wide.
Sizes Available For Skinny Oval Clip-on's
44mm Width x 24mm Height
46mm Width x 26mm Height
48mm Width x 28mm Height
50mm Width x 30mm Height
52mm Width x 32mm Height
Measure the width and height of your prescription eyeglass frames, just one lens only. You want to measure from the outside rim left to right and then the top outside rim to bottom outside rim. For more help, visit this page help selecting clip on sunglasses.