What this document settles
It fixes what a downhill ski goggle has to withstand and what it has to be marked with: resistance to impact from a defined projectile, the mechanical strength of the frame, the field of vision the design must leave, resistance to ageing and to surface damage, and the way the product identifies itself.
It applies to the goggle as an object — the frame, the lens fitted to it, the strap. It is the document that separates equipment made for a mountain from a moulded plastic mask made to look like it.
What it does not promise
It does not promise the lens is right for the light. That is the filter category, defined by a different standard and printed as a number from 0 to 4, and a goggle can carry both marks with a category that is wrong for the day.
It does not promise anti-fog performance. Nothing in it addresses the single failure that ends more days than any other, and a maker’s claims about double lenses, coatings and ventilation are their own.
It does not promise the goggle fits your helmet. Strap clips, frame depth and the brow gap are outside it.
It does not cover spectacle compatibility. “OTG” is a maker’s claim about a deeper frame and a notched foam, not a tested property.
It does not cover the spare lens. A replacement lens is sold as a component, fits one frame family, and is bought on its category and its fitting system rather than on this mark.
What it is read alongside
The filter standard, which gives the category. The helmet standard, for the other half of the same purchase. And on other markets a different eye-protection scheme applies, so a goggle sold internationally may carry more than one mark.
Where it turns up on this site
Goggles and the replacement lens shelf, and the helmet shelf through the fit between them.
This site handles it in one way, consistently. A goggle page prints the filter category as the maker states it, says whether the lens is double or single, reports an anti-fog treatment as a claim with the maker’s name attached, and prints OTG as a claim rather than a property. Where a listing shows a mark and states no category, the page says the category is unstated — which, on a goggle, is the figure that decides what it is for.
The questions asked most often
Does the mark mean the goggle will not fog?
No. Fogging is not what this standard is about. A double lens and an anti-fog coating are the maker’s answers to it, and both are declared rather than tested here.
Is a cheap goggle with the mark as good as an expensive one?
On what the mark covers, it may well be. On lens category, double-lens construction, field of view and whether the strap stays on a helmet, the shelf spreads widely, and those are what the pages compare.
Does the same mark cover the filter?
No. The tint and how much light it lets through belong to the filter standard, which is a separate document and the one that carries the category number.
Last reviewed 28 September 2026