Answer nine questions about how and where you ride to get a lens feature shortlist to shop against. It never names a VLT number, an ISO filter category, a brand, or a product. You get the features worth asking about.
Sunglass lenses are usually sorted by VLT (visible light transmission) into filter categories under the ISO 12312-1 sunglass standard. That standard's normative numeric boundaries sit behind a paid license, and the public abstract does not publish the exact cutoffs. Rather than guess at numbers we can't verify, this tool sticks to the parts of the evidence we can check directly: how polarization, anti-fog, anti-reflective coatings, and photochromic lenses behave, and when a professional or a physical fit check should replace a general answer.
The shortlist tells you whether to look for a neutral tint, test or avoid polarization, consider anti-fog treatment, or get professional prescription help. You still need to verify the exact lens and fit before buying.
Turns your answers into a lens feature shortlist, backed by clinical and optical-industry sources, with clear reasons and limitations for every answer.
It's not an eye exam, a prescription, a visibility guarantee, or a safety certification, and it never recommends a product, brand, or catalog match.
No answer here can tell you whether a given pair of glasses actually fits under your helmet or visor. Temple arms can press against retention systems, a visor can clip a frame, and full-face helmets and goggles need their own brow and cheek clearance. Always try the exact helmet and eyewear together before you rely on either one.
Answer the nine questions to see a feature shortlist for your rides.