How Should Sunglasses Fit?

|SWT Eyewear
SWT Eyewear sunglasses fit guide showing frame measurements for Endurance, Panorama and Strada collections

Buying sunglasses online comes down to one question: will they fit. Here is how to know before they arrive.

The good news is that you do not need to measure your face, guess your size, or hope. There is a simpler method that works almost every time, and it starts with a pair you already own.

The numbers that describe a frame

Every frame can be described by a short set of measurements, all in millimetres. You will see them on each of our product pages, written like this: 55-17-145.

The first is the lens width, the distance across one lens at its widest. The second is the bridge width, the gap between the two lenses that sits over your nose. The third is the temple length, the arm that runs from the front of the frame to behind your ear. We also give the lens height, and the single most useful number of all: the total frame width, edge to edge across the front. That last one is the number that really tells you whether a frame will fit, and it is the one to focus on.

The method that actually works

Forget measuring your face. The most reliable way to find your fit is to measure a pair you already own and like the fit of. Take sunglasses or glasses that sit well on you, lay them flat, and measure straight across the front from edge to edge. That single number, the total frame width, is your reference.

Then compare it to ours, listed on every product page. If the total frame width is close, within a couple of millimetres, the frame will sit on your face much the way your current pair does. Wider means a more relaxed, oversized fit. Narrower means a snugger one. It really is that simple, and it beats any face-measuring chart, because you are comparing against something you already know works.

The three SWT fits

Each of our collections has its own proportions. Here is how they compare.

Endurance has a total frame width of 140mm, with a 55mm lens and a classic aviator proportion. It suits a medium or narrow face well, and reads as a confident, medium-sized frame. The driver's shape.

Panorama shares the 140mm total width but carries it differently: a smaller 49mm lens, a wider 21mm bridge and a lower height. It is the most versatile of the three and works across the widest range of faces. The summer shape.

Strada is the largest of the three, with a 147.9mm total width, a 57mm lens and the tallest lens height of the three at 46.5mm. It suits a medium or wider face, or anyone who wants a bolder, more present frame. The statement shape.

Still not sure

If you are between sizes, or your reference pair lands somewhere in the middle, order the one you are drawn to and try it at home. Returns are free across Spain and the EU, so there is no real risk in seeing how a frame sits on your own face in your own mirror. And if you would rather ask first, write to us at info@swteyewear.com with the width of a pair you already wear, and we will tell you honestly how ours compares.

Every frame is cut from premium cellulose acetate and made to be kept for years, which is all the more reason to get the fit right the first time. See all three collections at swteyewear.com.

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