best vision for the kids . the anon tracker 2.0 goggle offers a comfortable fit and is specially designed for kids and teens. compatible with anon mfi® beanies, facemasks and neckwarmers for protection in all weather conditions. the cylindrical lens and flexible frame adapt perfectly to the natural curvature of the face, and full-length vents and anti-fog treatment ensure clear, fog-free vision in all weather conditions. of course, the anon tracker 2.0 is compatible with helmets.amber lensthe amber lens is perfect for poor visibility and cloudy conditions. transmittance of visible light: 55 %