Shapes & Sizes

What lens power do I need?

To help you determine what magnification you need, we have a chart, Lens Power to help you. Before you print out the chart in portable document format (aka, pdf), make sure that you don’t select the “fit to page” printing option. 
Hold the pdf print out about 13” from your face. Your lens power is the smallest size of print that you can comfortably read. The figure next to your optimal print size is the lens power you need.

How do I know if I have a small, medium or large sized face?

Unless otherwise specified in the product descriptions, most Flutter eyewear are sized for a medium-sized face. By using the Virtual Try-On tool with your webcam, your approximate pupillary distance (PD) will be measured and you will be able to view the relative size of the glasses on your face.

What are the measurements shown on the product pages?

A three number measurement, in millimeters (mm), appears in the description of each Flutter eyewear such as 51-14-135. The first number, 51, is the mm width of each lens. The second, 14, is the distance between the lenses or the bridge. The third, 135, is the length of the temple arms.