Proper frame sizing is crucial for both comfort and aesthetics. Most online eyewear retailers provide sizing information for each frame, typically represented by three key measurements: 1.Frame Width: Measure the width of your face from temple to temple to find frames that suit your face width. 2. Lens Height: Measure the vertical distance of your eye in the frame. This ensures that the frames cover your eyes adequately. 3. Bridge Width: Measure the distance between your eyes to find frames with a bridge that sits comfortably on your nose. By knowing your ideal frame size, you can narrow down your options and ensure a better fit when your eyeglasses arrive.