UV400 is one of the most useful labels to understand when choosing sunglasses. It refers to lenses designed to absorb ultraviolet radiation up to a wavelength of 400 nanometres.
What does UV400 mean?
The World Health Organization explains that sunglasses offering full UV protection should absorb UV-A and UV-B radiation up to 400 nanometres, which is why this level is identified as UV400.
Source: World Health Organization – UV protection guidance.
Does a darker lens mean more UV protection?
No. Lens colour, darkness and price do not tell you how much UV radiation the lens blocks. The UV specification matters more than how dark the lens looks.
Why UV protection matters
UV exposure affects the eyes as well as the skin. For outdoor eyewear, choose sunglasses with a stated UV specification and do not rely only on fashion or lens darkness.
UV400 and Belvoir&Co eyewear
Many Belvoir&Co sunglass models are listed with UV400 lenses. Always check the individual product description for the exact specification of the model you are considering.
You can browse current options in Sunglasses, Rimless and Diamond Cut.
UV400 vs polarized lenses
UV protection and polarization are different features. UV protection concerns ultraviolet radiation; polarization is designed to reduce certain types of reflected glare. A product can have one feature, both or neither, so check the product specification.
Lunettes de soleil UV400 au Maroc : que faut-il vérifier ?
La mention UV400 désigne des verres conçus pour filtrer les rayonnements ultraviolets jusqu'à 400 nanomètres. Pour choisir des lunettes de soleil UV400 au Maroc, vérifiez la mention exacte dans les caractéristiques du fabricant ou de chaque fiche produit : ni la couleur du verre ni son prix ne permettent de confirmer cette protection.
Consultez nos lunettes de soleil et nos montures sans contour pour comparer leurs caractéristiques. La disponibilité d'une couleur ou d'un style n'implique pas automatiquement que le modèle possède des verres UV400.
Quick answers
Does UV400 mean 100% UV protection?
UV400 is used for lenses designed to block UV-A and UV-B radiation up to 400 nanometres. Check the manufacturer or product specification for the exact claim on a specific model.
Can I tell UV protection from lens colour?
No. A dark lens is not proof of stronger UV protection.
Where can I find UV400 sunglasses in Morocco?
Check the current Belvoir&Co Morocco product pages and the Sunglasses collection for models whose specifications state UV400.
Related eyewear guides
For a more informed choice, read our sunglasses buying guide for Morocco and photochromic lenses versus sunglasses. Compare the actual specifications on each product page before ordering.
Featured Belvoir&Co models
Both product descriptions explicitly state UV400. Always verify the claim on the product you select; lens darkness alone does not establish UV protection. Explore the product pages and their collections to compare official photographs, specifications, colourways and ordering options.