The Smith 4D MAG S goggle brings the wide field of vision and clear Chromapop lens of the 4D MAG to a goggle designed for smaller faces. The goggle sets the bar very high in terms of lens innovation with the introduction of BirdsEye Vision. This new lens technology expands the field of vision by as much as 25% compared to normal spherical goggle.In addition, the Smith 4D MAG S has further developed the MAG mechanism by integrating a double locking mechanism in the frame. This makes changing even faster and easier. With BirdsEye Vision and Chromapop you have the best frame and lens technology you could wish for.