Size Guide

Size Guide

Frame Size and Glasses Measurements Made Easy

Choosing the right frame size is a crucial aspect of purchasing eyewear online, and it's surprisingly simple! We've crafted a helpful guide to streamline the process for you. Here's what you should keep in mind when seeking the measurements for your eyeglasses and sunglasses frames. To ensure a perfect fit, start by identifying the ideal frame size for you. A great starting point is to examine the eyeglass measurements on a pair you currently own. Locate the three small numbers on the inside of the temple, also known as the "arm" of your glasses. These three numbers represent the frame's measurements.

01

Lens Width

This denotes the maximum horizontal width of each lens, typically falling within the range of 40mm to 60mm.

02

Bridge Width

This represents the separation between your two lenses. Simply put, the bridge width is the area where your frames rest on your nose. Its dimensions typically vary from 14mm to 24mm.

03

Temple Length

This represents the temple's measurement from each screw to its tip, encompassing the curve that rests on your ear. Generally, the temple measures between 120mm and 150mm in length.

Discover the Ideal Frame Size!

Explore our extensive eyeglass frame collection to find the perfect fit for you. If your old sunglasses or glasses lack specific numbers or specifications, don't fret. It's simply an opportunity to put your measuring skills to the test. Grab a ruler or tape measure and meticulously measure the size of the glasses, referring to the provided graphic. To simplify the process, the glasses and sunglasses available in the Ossa Frames online shop are categorized as S (small), M (medium), or L (large), based on the lens width.

Small

Lens width < 49 mm

Medium

Lens width 50-60 mm

Large

Lens width > 60 mm

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Trusted by customers who upgraded their frames with prescription lenses
Evelyn Hayes 04/06/2026
If you have a pair of frames you already love, this is the only way to go. The lens coatings are durable and provide great clarity. It’s a high-end service that is also very budget-friendly.
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I was impressed by the quick turnaround time. From the moment I sent my frames to the day I received them back, the service was efficient and professional. My vision has never been better.
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The team was extremely helpful in answering my technical questions about lens thickness and coatings. They handled my request with care and kept me informed throughout the entire replacement process.
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Rissa made everything easy. I was missing some information for my order, and she guided me through the process of gathering it. This is a great company to work with.
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