Julbo's Aerolite Reactives are specially designed for women and runners with small faces, sports glasses designed for vigorous training and competition with a photochromic one-piece that gives a wide field of vision and excellent air conditioning. They correspond to the Aero model, but are even lighter because there is even less of the frame. The degree of darkness of the lens is adjusted according to the amount of light. Darker in sunnier weather, light giving more light in cloudy weather. A really excellent feature when the races on the bike or on the trails are long and the conditions vary. Thanks to NTS (Non Temperature Sensitive) technology, the temperature does not affect the changes in the degree of darkness of the lens. Because there is a gap between the frames and the lens, air travels perfectly in the glasses and the lens does not fog up easily. The lens also has an anti-fog coating on the inner surface and a repellent surface on the outer surface, which again makes cleaning