Numbers on Eyeglass Frames: What They Mean and Why They Matter
Aug 05, 2025
Have you ever seen the small numbers that are printed within the temples of your glasses? More than just codes, they tell you important things about how your glasses fit and work. This guide will help you figure out what each part means and why it matters when you choose or replace frames. This way, you can be sure you get the right pair.
Frame Size Breakdown: The Core Three Numbers
To choose the right pair of sunglasses, you need to know how to size the frames. The three most important numbers—lens width, bridge width, and temple length—make sure your shades fit perfectly. Here's what each one implies and why it matters.
Lens Width
The width of a lens is the distance across the lens at its widest point, measured in millimetres. It affects how the sunglasses fit and look overall and how the frame fits your face.
Bridge Width
This number tells you how far apart the two lenses are, which is also known as the nasal bridge. A properly sized bridge width makes your glasses comfortable by keeping them from slipping down or pinching your nose.
Temple Length
Temple length is the measurement of the arms from the hinge to the ear bend. The right length ensures a secure fit with balanced pressure on your ears, so your shades stay put all day. Need help picking the perfect fit? Explore GlassesShop’s guide on how to choose the right eyeglasses for tips to nail your sunglasses sizing.
Other Common Markings and What They Mean
The little marks on your frames can tell you a lot about their style, fit, and quality. This is what they signify and why they are important for getting the right glasses for you.
Frame Model and Brand Codes
Most frames have a brand or model number, which is a unique ID for that type. If you want to get more of the same frame in a different colour or size, these codes are the best place to start. They are very helpful if you are on a budget or want to get a high-end pair.
Color and Variant Codes
Manufacturers use short codes to show colour differences, which makes it easier for you to choose the finish you desire. This makes it easy to choose for a style, whether you're looking at cheap classics or expensive designs at GlassesShop.
Frame Material or Standards
Look for abbreviations like TR90 or acetate. These might tell you what the frame is made of and how strong, flexible, or safe it is. If you know these things, you may choose frames that fit your lifestyle, from cheap, strong ones to expensive, long-lasting ones.
Why These Numbers Matter When Buying Glasses
The numbers on your eyeglass frames have a lot of information to help you choose the right pair. Here's why they're important for comfort, compatibility, and buying with confidence.
Ensuring Proper Fit and Comfort
Picking frames with the proper size specs will help you avoid pressure points, slippage, or frame deformation. If your frame doesn't fit right, it might be uncomfortable to wear for a long time. Checking those numbers makes sure your glasses look and feel excellent.
Matching Your Existing Frame or Lenses
It's very important to match the precise numbers if you're getting new frames but maintaining existing lenses. Lenses that are even a little bit different in size may not fit or be comfortable, therefore it's important to be exact when switching them out.
Making Online Shopping Easier
Knowing your size numbers makes online shopping a breeze. Sites like GlassesShop let you filter frames by size, streamlining the process.
How to Measure Frame Size at Home?
Do you not know how to find out what size your frame is? It's not as hard as you think. You can use a pair of glasses that fits well as a guide, or you can measure important parts like the width of the lenses and the bridge yourself. Want a clear guide to nail it? Check out GlassesShop’s step-by-step tips on measuring your glasses frame size to find frames that feel just right.
Conclusion: Small Numbers, Big Impact
The little numbers on your eyeglass frames aren't just there for decoration; they tell you how to get the optimum fit, comfort, and style. With our filters for lens width, bridge size, and temple length, it's easy to select the perfect pair of glasses at GlassesShop. Not sure what will work best for you? Our Face Shape Detector and 3D Virtual Try-On let you test styles with ease. Plus, with over 1,800 frames and custom lens options like photochromic or blue light blocking, you’re covered for every need. Score big with our Buy One Get One Free offer, 365-day warranty, and free shipping on orders over $69. Shop smart at GlassesShop and make those frame numbers work for you!
