National Sunglasses Day on June 27 reframes a summer staple as what it really is: protective equipment for your eyes. The same ultraviolet radiation that burns skin also harms the eyes, contributing over time to cataracts, growths on the surface of the eye, and even sunburn of the cornea after intense exposure. A good pair of sunglasses is not just about looking sharp or cutting glare, because it is genuine, long-term prevention.

UV protection is the whole point

The single most important feature on any pair of sunglasses is UV protection, and it has nothing to do with price or lens darkness. Look for a label that says 100 percent UV protection or UV400, which blocks essentially all harmful rays. Dark lenses without UV protection are actually worse than none, because they make your pupils dilate and let more unfiltered UV in. Once that box is checked, everything else like color, style, and polarization is preference.

Bigger and wrap-around covers more

UV reaches your eyes from the sides and from reflections, so the more coverage a frame provides, the better. Larger lenses and wrap-around styles shield the delicate skin around the eyes, an area prone to both wrinkles and skin cancer that most people forget to protect. For driving, boating, fishing, or snow, polarized lenses cut blinding glare off water, roads, and other flat surfaces, making them safer as well as more comfortable. Sport-specific frames stay put during activity.

Wear them year-round, and protect kids too

Sun damage to the eyes is cumulative, so protection is a year-round habit, not a summer one. Snow, sand, and water all reflect UV and can intensify exposure, and bright winter days can be surprisingly harsh. Children’s eyes are especially vulnerable because their lenses are clearer and let more UV through, yet kids are often the last to get real sunglasses, so a well-fitting pair with genuine UV protection is worth it early. Keep a spare pair in the car so you are never caught squinting into a low sun.

Taking care of your sunglasses helps them take care of you, so store them in a hard case and clean them with a microfiber cloth rather than your shirt, which scratches the coating. Scratched or warped lenses distort vision and get left at home, defeating the purpose. National Sunglasses Day is a reminder that the best pair is the one you will actually wear every day, protective, comfortable, and always within reach when the sun comes out.

How to celebrate

  1. 1
    Check for UV400

    Make sure the label says 100 percent UV protection or UV400. Dark lenses without it are actually worse than none, since your pupils dilate.

  2. 2
    Go bigger

    Larger and wrap-around frames shield the delicate skin around your eyes. They also block UV coming in from the sides.

  3. 3
    Wear them year-round

    Sun damage to the eyes adds up, and snow, sand, and water all reflect UV. Bright winter days can be surprisingly harsh.

  4. 4
    Protect kids' eyes

    Children's clearer lenses let more UV through, so get them real sunglasses early. A well-fitting pair with genuine UV protection is worth it.

  5. 5
    Keep a spare

    Stash a backup pair in the car so you're never caught squinting. Store them in a case so the lenses don't scratch.