The SINNER DUCK MOUNTAIN is really geared towards young children, we would say that it fits those from 4-10 the best.Equipped with a Category 3, double, full blue, mirror lens used in partly cloudy to sunny conditions with special anti-fog coating to stay fog free, while it blocks harmful UV rays.This clever goggles have a good facial coverage which allow a clear view of the terrain and slopes and your kids enjoy their perfect winter vacation. The anti-fog treatment tends to work well and lasts for a long time.The colour choices are fun for kids.