vonzipper velo goggles . the vonzipper velo goggles offer an oversized lens with vast peripheral vision and a patented ventilation system. it draws moist air out of the goggles as long as air flows through them, giving you ultra-clear vision. triple-density foam on the face and the polar fleece lining also ensure maximum comfort.wildlife blackout lenswildlife lenses work like polarized lenses but filter 99.9 % of harmful hev rays. as with polarized lenses, this also reduces glare and increases contrast. the wildlife blackout lens is perfect for sunny days and glaciers.light transmission: 6 %