Anon offers a variety of goggle lens options in various tints for adapting the Anon Tracker 2.0 Goggles to any weather condition. All Anon Tracker lenses have an anti-fog treatment for fog-free clarity through a wide range of conditions.Features:- Designed to fit kids’ Anon Tracker 2.0 Goggles- Cylindrical Precurved Lens wraps to the shape of the face- Integral Clarity Technology anti-fog exceeds basic anti-fog treatment standards, delivering crystal clear vision that lasts for an extended period of time