This model of glasses has advanced hydrodynamics and a wide field of view. High-performance lenses made of polycarbonate are durable and impact resistant. Mirror coating of the lenses protects the eyes from ultraviolet rays and allows the use of glasses for swimming in open water and in pools with bright lighting. Self-adjusting nose bridge for a perfect fit on the face. Double silicone strap with occipital clip for easy adjustment and better fixation on the head.