Oakley sunglasses, a pinnacle brand that's known for quality and craftsmanship, appeal to both men and women who seek stylish sunglasses. Due to the price of these sunglasses, shop carefully before you purchase. Some Oakley sunglasses are one-size-fits-all, and others come in sizes that may not fit every face. Size Oakley sunglasses before you decide which pair you want.

Look at your current eyeglasses (if you wear them) to see what size eyeglasses you wear. You can often find eyeglass size stamped on the inside edge of the eyeglass arm or nose bridge. You should see a number separated by a slash and decimal point.

Find the sizing of the Oakley sunglasses you wish to purchase. If you are purchasing online, find this information along with the other information about the style and color of the sunglasses in the product listing. If you are purchasing in a store, find this information either stamped on the sunglasses or on a tag or product listing accompanying the sunglasses.

Determine the size of Oakley sunglasses you need by the size of your face. A small or thin face would require eye size frames between 40 and 48 mm. A medium to large face would require eye size frames between 49 and 58 mm. Extra wide faces would require eye size frames above 58 mm.