Sunglasses Fit Guide

Have you ever gone to order a new pair of glasses only for them to show up and not fit right? This happens way too often, since a lot of people don’t even really know how to tell what sunglasses will fit them best. But once you break down all the steps, figuring out how to make sure your glasses fit perfectly, really isn’t too complicated. So, here’s everything you need to know about finding your fit. 


Measuring the Fit

There are two ways you can find out the exact measurements you need to look for when buying your next pair of sunglasses. The first, measure the hinge to hinge distance on a pair of sunglasses you already own and know fit. The hinge to hinge distance can be measured by taking a ruler and measuring the distance between each hinge on either side of the glasses using millimeters. Hinge distance ranges from XXS (<121mm) to XXL (>140), and is super easy to measure.

Size | Hinge to hinge (mm)/(inches) 
XXS  |  <121 / <4.8
XS  |  121-124 / 4.8-4.9
S  |  125-128 / 4.9-5
M  |  129-132 / 5.1-5.2
L  |  133-136 / 5.3-5.4
XL  |  137-140 / 5.4-5.5
XXL  |  >140 / >5.5 

 The other way is to check on the inside arm of your favorite pair of glasses and look for a combination of letters and numbers. The code, usually on the far left, is the model name. After that you’ll see the Lens width, Bridge width, and sometimes the temple width. All of this information will make it super easy to find glasses in your exact size. 

Finding The Perfect Size

So now that you know exactly what size of glasses you need, how do you find that specific size? If you’re shopping in person you could always just find the numbers on the inside arm of the frame of the glasses you want and match it to the numbers you found from the methods above. But online, it may seem more difficult. In reality though, as long as you've figured out what size you are, you can just look up whatever glasses you want in that specific size. For example, XL Aviators or Oakley Flak XXS. 



What Frame Style is Best For My Size?

Besides size, style is another big part of making sure your sunglasses fit you best. Some frames generally look better on specific sized heads. Typically larger or thicker frames look better on bigger heads and vice versa. But we can break it down. 


Small Sizes

Wire frames like Fuses Sanibel or Talbot typically fit people with small heads the best. This is because the thin wire frame doesn’t stand out too much on the face and doesn't make your head seem smaller in comparison. 

Medium Sizes

Average glasses like Fuses Lido or Summerland frames fit medium sizes best, since the thickness of the frame is somewhere in between wire and thick. 




Large sizes

Large to extra large sizes need thick frames. Similar to Fuses Anclote, Egmont or 3 Rooker frames. Since the frames are thick, they don't appear too small, like most glasses would, on larger heads.


Common Misconceptions About Eye Health

Previous Post


The Ultimate Guide to the Best Hiking Sunglasses

Next Post

Leave a comment

Please note, comments must be approved before they are published

Over 50+ Top
Name Brands Available

See All Colors

You choose from over 20+ colors and tints. Our highest quality lenses come with polarization and anti-reflective coatings.

Go to lens colors

Gain Access to Pre-Order!

Log in to gain access to pre-order our best selling and fastest-going lenses.

Already have an account? Log In

Lens Comparison Chart

Lens types

From the everyday to the extreme, we have lenses to meet your needs.

Learn More
Standard PRO


Quality Polycarbonate
100% UV Protection
Increased Eye Comfort
Increased Durability
Water and Oil Resistant
Lens Engraving
Enhanced Color and Clarity
Warranty Details

Fuse +Plus Warranty

Fuse +Plus lens purchases include a lifetime, 1 time replacement guarantee. It doesn’t matter if something happens today, tomorrow, or 10 years from now -- we’ve got your back.

Standard Warranty

All lens purchases include a lifetime, 1 time replacement warranty standard, no questions asked.

Extended Warranty

You can add an additional warranty replacement to your order for just $9.99. Adding this option gives you a total of TWO lens replacements over the lifetime of your lenses!
*Each extended warranty purchase applies to one set of lenses on your order. You can only purchase one extended warranty per pair of lenses. Not valid on prescription lens orders

Warranty redemptions may only be used for a lens of the same value and for the same frame as the original purchase. If your lenses become damaged at any time during the warranty time period, simply contact customer service from our Help Center to get a fresh set of lenses.

60 Day Guarantee, Buy With Confidence!

All lens purchases include a 60-day guarantee. Within 60 days after the date of delivery, you may exchange or return your item for a full refund. To be eligible for a return, your item must be unused, in the original packaging, and in the same condition that you received it.

Unfortunately, gift cards are ineligible for returns. Additionally, past 60 days we are unable to offer you a refund. To complete your return, we require proof of purchase..

We get a ton of packages, so please do not send your items back without first receiving a Return Merchandise Authorization (RMA) number. You will receive an RMA number once you have started a return or exchange. To start a return or exchange, contact us at from our Help Center.

Your Cart