100% UV Protection - UVA / UVB protection for the health of your eyes
Hard Coated Lens - Outer lens hard-coating extends the life of the lens
Project Flatlight - Von Zipper created Project Flatlight for those times when the light gets low and definition is an issue. These lenses will brighten your day even when the weather and lighting conditions are at their worst. Gain some definition by adding some visual light transmission. According to Von Zipper it's like having sunshine on demand.
Only the following colors feature the Project Flatlight lenses: "yellow chrome", "clear chrome orange", and "nighstalker blue"
Super Anti-Fog Coating - Hydrophobic inner lens coating absorbs moisture
Tru-Def Lens Technology - If you are looking for the ultimate in visual clarity in your goggle's optics, the proof is in the truth! Von Zipper's Tru-Def lens offers maximum acuity, clarity and definitions in a wide array of conditions. They've developed and exclusive lens to filter out specific blue light wavelengths to help you identify all the humps, bumps and transitions in each run, offering sharpness and accurate vision in an all purpose snow lens. They raise their right and swear to old man winter.
Only goggles or lenses with "tru-def" in the color name feature this technology.
VLT stands for Variable Light Transmittance, which is the percentage of light that is allowed to penetrate the lens, for brighter conditions you'll want a lower VLT rating and with darker conditions you'll want a higher VLT rating.
Overcast - VLT between 37% and 54%
Stormy/Night - VLT between 55% and 100%