The "Category - CAT" number determines the light transmission rate (light transmittance) in the visible range. How well and clearly you can perceive your surroundings depends primarily on the lens you choose.
Replacement Lens TROOP EVO
You have found the perfect ski goggles, but can only wear them in bright sunshine?
We can help you to wear the ski goggles during all weather conditons. You can now equip the ski goggles The TROOP EVO with replacement lenses. With the spare lenses you have the right perspective even in cloudy weather, snowfall, fog or during changing conditions and enjoy perfect vision in less than two seconds with our SnapTech magnetic system. You can choose between the bad weather lens, the blue or yellow, the purple or the black lens.
For better understanding we have created the following table for you. The categories are standardized and roughly indicate how much light comes through the lenses and what weather conditions are perfect for the lens.
name of the glasses |
category |
Suitable for: |
VLT (visible light transmission) |
Clear | category 0 | night skiing | 80 to 100% VLT |
Bad Weather |
category 1 |
snowfall/fog |
40 to 80% VLT |
Blue Yellow |
category 2 |
cloudy and partly sunny weather |
18 to 43% VLT |
Purple |
category 3 |
bright daylight |
8 to 18% VLT |
Black |
category 4 |
bright sunshine |
3 to 8% VLT |
Free shipping from 100€ (AT/DE), or from 150€ (EU).