Ray-Ban RB4391D – Black / Blue Lens

What is Frame Size?

Frame size refers to the horizontal width of the sunglasses, measured between the center of the left and right hinge (see image). Our sunglasses come in a variety of sizes, categorized as Small, Medium, and Large in the chart below.

How Do I Know the Right Size for Me?

The best way to determine your ideal size is to measure a pair of sunglasses you already own and that fit you well. Here's what to do:

1. Grab a ruler.
2. Place the ruler horizontally across the front of the sunglasses, aligning it with the center of the left and right hinges (see image).
3. Measure the distance in millimeters (mm).
4. Consider a tolerance range of +/- 4mm. This means if your measurement falls within 4mm of a size category, you can go with either size depending on your preference for a snugger or looser fit.

Other Measurements:

The size guide above focuses on the most crucial measurements for fit. However, some sunglasses may also include additional details on the inside of the temple arm (see image):

Temple Length: This might be explicitly labeled as "temple length" or denoted with numbers indicating the total length from hinge to tip.

Bridge Width: This might be labeled as "bridge" or displayed with numbers indicating the distance between the lenses.

Lens Height: This might be less common but could be included with numbers specifying the vertical lens measurement.

Tips for Choosing the Right Size:

Consider your face shape: Smaller frames generally work better for narrow faces, while larger frames can balance out wider features.

Try before you buy: Whenever possible, try on sunglasses in person to ensure a comfortable and flattering fit.

Consult a professional: If you're unsure about sizing or have specific needs, don't hesitate to reach out to us!