These Ray Ban RB3578 sunglasses feature a round and oval silhouette. This playful design is defined by their semi-rimless frame and oval shaped lens, while the lightweight metalwork and acetate tips provide the ultimate comfort. The RB3578 sunglasses are a taste of vintage but contemporized through the multi-ton gradient sunshades and punch of color. Known for their defined crystal lenses and distinct semi-rimless shape, the RB3578 sunglasses provide 100% UV protection and 100% coolness to any look.