I don't know the style name but these sunglasses are very light and designed to protect your eyes. Please read below FULL SPECTRUM UVA / UVB PROTECTION DRIVING SUNGLASSES that wrap around to offer the ultimate all-weather protection and full range of vision for sunglasses men can depend on for sports and motorcycle safety HIGH-DEFINITION CLARITY with durable mineral glass lenses featuring Spectral Control technology unique to Serengeti to fine-tune light passing through and keep your vision crisp PHOTOCHROMIC TECHNOLOGY provides your eyes the exact amount of light needed at a particular time, based on conditions, gradually darkening when needed DURABLE NYLON TR90 MATTE BLACK SUNGLASSES with tough frames and scratch- and impact-resistant lenses can take a beating during outdoor sports and activities COMFORTABLE AND LIGHTWEIGHT sun glasses for all-day wear, Summits will stay securely on your face when the wind’s in your hair IDEAL FOR SPORTS DRIVING AND MOTORCYCLE SAFETY in all weather conditions, Bolle Sunglasses designed the Serengeti Summit Drivers (5602) for versatile light situations to react to changing light while playing sports, or out on the open road, when your safety depends on the utmost sunlight and UV protection