What Does UV400 Mean?

UV400 means the lens blocks light with wavelengths up to 400 nanometres, which covers all UVB and UVA rays. It is the same claim as "100% UV protection".

UV400 vs polarized

UV400 is about invisible ultraviolet light; polarization is about visible glare. A cheap dark lens without UV400 can be worse than no sunglasses, because the pupil opens wider behind it and lets more UV in.

Does a darker lens mean more UV protection?

No. UV filtering comes from the lens material and coatings, not the tint. A clear PC lens can block UV400, and a dark tinted lens may not.

UV400 models from our range

YM3192Rimless Square Sunglasses

6 colors

6 colorsQuote this model

YMJH161Polarized Cycling Sunglasses

PCPolarized7 colors

7 colors · PolarizedQuote this model

YMHY2303Rimless Polarized Photochromic Sunglasses

Polarized8 colors

8 colors · PolarizedQuote this model

YMSG-12Polarized Sunglasses

Polarized9 colors

9 colors · PolarizedQuote this model

GZ-SP5742Rimless Shield Cycling Sunglasses

PCPolarized3 colors

3 colors · PolarizedQuote this model

2026050505Polarized Photochromic Cycling Sunglasses

TPEPolarizedPhotochromic

Polarized · PhotochromicQuote this model

YM7076Rimless Half-Rim Sunglasses

5 colors

5 colorsQuote this model

GZ-SP2891Rimless Fishing Sunglasses

11 colors

11 colorsQuote this model

Which standards cover UV protection?

EN ISO 12312-1 sets sunglass requirements in Europe, including UV transmission limits by lens category; ANSI Z80.3 is the US equivalent, and the FDA regulates sunglasses as medical devices under 21 CFR 801 for impact resistance. Our EN ISO 12312-1 certificate is MAX1336B152E and covers sunglasses.

How to check UV400 on a sample

A UV meter or spectrophotometer gives the real number; a UV torch test only shows that some UV is blocked. For bulk orders ask for the lab report of the lens you are buying.