Sunglasses are essential for protecting our eyes, but choosing them can be a demanding process as they must be comfortable, fit well on our face, and express our personal style. There are many options in terms of sizes and frames, and often this makes our choice more difficult. We will help you with this guide to choose the right sunglasses much easier!

Tips for choosing the right glasses

• The most common size for sunglasses is Medium, as it fits properly for 90% of the population.
• The length of the lens is essentially the size of the glasses.
• The total length of the frame (lens length + nose bridge length + lens length) should match the width of your face (measured across the forehead).
• The arms of the frame should be as aligned as possible with the length of your face. Short and tight arms may cause your ears to stick out.
• The eyebrows (at least part of them) should be visible above the frame.
• When wearing glasses, your eyes should be aligned with the center of the lenses.
• The frame of the glasses should not rest on your cheeks. Try to smile, if your cheeks touch the frame, then your glasses are too big! If you have large cheeks or cheekbones, opt for small sunglasses.
• It is recommended that the frames we choose have a shape opposite to the shape of our face.

How to choose the right size of sunglasses

Let's start by choosing the appropriate size. The proper fit of sunglasses is not only more flattering in appearance, but it is also more comfortable and will better protect your eyes from the sun. Before we analyze 2 easy step-by-step ways to find the right size, let's see what the numbers inside the frame of the sunglasses mean.

What do the numbers inside the frame of the sunglasses mean?

If you have noticed, there are some numbers inside the frame of the sunglasses. These numbers refer to the lengths of the lens, the bridge, and the arm.

• Lens Length: The length of the lens is the most important element that will help you choose the right size.

  Tip: Check the size chart below and how the range of lengths corresponds to sizes S, M, and L.

• Bridge Length: The bridge length is the distance between the two lenses and is an important factor in how comfortable the frame will fit on your nose and, consequently, on your face. The correct bridge length will provide you with comfort and stability, as the glasses will not slip off your face and will not fog up.

  Tip: If the beginning of your nose is at the same height as your eyes or below them, then look for glasses with a bridge length of 16-18mm. If the beginning of your nose is above the height of your eyes, then look for a frame with a bridge length of 19-21mm. In any case, when buying a thick frame glasses, we should look for glasses with a bridge length 4mm larger.

• Arm Length: The arm length refers to the total length of the frame's arms that pass behind your ears and hold the glasses on your face.

  
  Tip: Depending on your face, avoid smaller arms, as they may press on your ears and become very uncomfortable after some time. Also, avoid very large arms for your face, as the frame will not be stable.
  

Sizes

Now, let's see how easy it is to find the right size with 2 alternative ways. For the 1st one you will need a credit card and for the 2nd one a pair of sunglasses from your collection that fit well.

1. The trick with the card

All you need is a credit card and a mirror or your mobile phone camera.

Step 1: Holding the card vertically, place the edge in the middle of your nose (at the beginning of the bridge of your nose below the eyebrow, so it doesn't cover the eye).

Step 2: Notice where the other edge of the card ends and precisely how much it protrudes from your eye. Now, you are ready to find your size!

• Small (S): The edge of the card extends beyond the end of the eye.
• Medium (M): The edge of the card ends at the end of the eye.
• Large (L): The edge of the card ends before the end of the eye.

2. The trick with the old pair of glasses

• Lens Width (Size): Take a pair of glasses from your collection that you believe fits you perfectly on your face. Look for the numbers inside the frame and focus first on the most important one, which is the lens width, to find the size of the frame.

• Bridge Width: Once you have found the ideal size, it's time to get more precise! Look for the number inside that indicates the length of the bridge of the frame.

• Arm Length: Finally, for your comfort and the stability of your new glasses, search inside the frame for the number corresponding to the length of the arm.

See also our guide to the frame style that suits you ---> Which sunglasses suit you? Choose a frame according to your face!