Look for a label that promises 100% UV protection or UV400, then choose a frame that fits securely and covers the sides of your eyes. Polarization can reduce glare from reflective surfaces, but it does not provide UV protection by itself. Lens darkness and polarization are not substitutes for a clear UV label.
Start with the UV label, not the tint or the brand name. Then choose a frame that fits your face, gives enough side coverage and feels comfortable for the places you will wear it.
Check UV protection first
Look for 100% UV protection or UV400 on the tag or product page. The American Academy of Ophthalmology says these labels indicate that sunglasses block ultraviolet light across the relevant range. Darker lenses do not automatically block more UV, so a dark tint without a clear protection label is not a reliable shortcut.
If you are buying prescription sunglasses, apply the same UV check and confirm the frame and lens options with the optical provider. Check the seller’s return or adjustment policy if you are ordering online.
Choose polarization for glare
Polarized lenses can reduce reflected glare from surfaces such as water or pavement. That can make them useful for driving, boating or time near reflective surfaces. Polarization is a comfort feature, not a UV rating, and not every activity calls for it. If you often read screens or instrument displays while wearing sunglasses, try the lens type in that setting before choosing.
Fit and coverage matter
- Choose a frame that stays in place without pinching your temples or nose.
- Check that the lenses cover your eyes from the front and sides. Larger or wraparound styles can limit side exposure.
- Look for comfortable nose pads and temples if you plan to wear the pair for long periods.
- Confirm that the frame works with a hat, helmet or prescription insert if you use one.
Lens color and frame shape are personal preferences. Make the protection label and comfortable coverage the first checks, then choose a style you will want to wear. Our capsule wardrobe guide covers building everyday outfits around versatile pieces. Browse accessories for more buying advice.
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Common questions
What label should I look for on sunglasses?
The American Academy of Ophthalmology recommends looking for 100% UV protection or UV400. These labels indicate protection across ultraviolet wavelengths up to 400 nanometers.
Do polarized sunglasses block UV rays?
Polarization reduces glare, but it does not itself provide UV protection. Check for a separate 100% UV or UV400 label.
Are darker sunglasses better for sun protection?
Not necessarily. Lens darkness does not tell you whether the lenses block ultraviolet rays, so check the product's UV label rather than judging by tint.