Smoke and Brown lenses are best for when the sun is high and the sky is clear. Sunny-to-cloudy days call for the AC Redâ"¢ lens, while the Yellow lens brightens an overcast day. Grilamid TR-90 frame construction for optimal durability and resistance to chemical and UV damage. 100% UVA & UVB Protection. Hydrophilic, adjustable ear pads. Lens vents for increased airflow and deceased fogging. Fits small to medium. Good fit for women. Direct Fitâ"¢ lenses can accommodate most single-vision prescriptions into the entire lenses, resulting in distortion-free vision without visible lines or use of adapters. Includes zippered hard-shell case. Imported.