Features

Category 3
Alps Mirror: 10% visual light transmittance (VLT)
Graphite - 11,84% visual light transmittance (VLT)
Bronze - 10.06% visual light transmittance (VLT)

Category 4
(not suitable for driving)Flash Electric: 5.24 % visual light transmittance (VLT)Silver Mirror - 4,99% visual light transmittance (VLT)

UV protection
The lenses are blocking 100% UV radiation.

VLT-visual light transmittance:
Visual light transmittance is the amount of light in the visible portion of the spectrum that passes through a glazing material. All the lenses are under 15% VLT which assure a highly reflecting coating

Polarized
Polarized lenses eliminate glare from reflective surface. On snow the reflection can indicate ice or crevasses area. This is the reason why we do not use polarized lenses.