1.Round shape: These eyewear feature round-shaped lenses that have a retro and vintage-inspired look, providing a classic style. 2. Acetate frame: The frames of these eyewear are made from high-quality acetate material that is durable, lightweight, and comfortable to wear. 3. UV protection: These eyewear provides protection against harmful UV rays, which can damage the eyes over time. 4. Scratch-resistant lenses: The lenses of these eyewear are typically scratch-resistant, 5. Lightweight and comfortable: The Acetate material is lightweight, flexible and comfortable to wear, making round acetate eyewear a great option for everyday use. 6 .Double nose bridge: Aviator sunglasses typically feature a double nose bridge, which adds to the sunglasses' distinctive look and helps to keep them in place