Specifically designed for narrow faces, the Tifosi Slip sunglasses have a lens tint to accommodate you. Featuring interchangeable lenses, frame includes a base set of polarized lenses Smoke lenses with gray tint and 2 additional sets of lenses red and yellow tints. Polarized lenses reduce 99 of visible glare from water, snow, sand and pavement for increased visual acuity and decreased eye strain. Additional lenses are ideal for low- and medium-light and nighttime conditions. Lightweight and virtually shatterproof, polycarbonate lenses are 20 times more impact resistant than glass and one-third the weight. Grilamid TR90 lightweight nylon frames offer a consistent fit and flexibility in all temperatures and are extremely impact resistant. Hydrophilic rubber nosepiece and temple ends become tackier when wet for reliable grip during exercise and hot weather. Ventilated lenses increase airflow to help eliminate fogging. Fits small to large faces.