Key features: Frame made of cellulose acetate. Ultra-light technology: 30% lighter and even more flexible. Lenses Include: Lenses certified ISO, IAF, and KAB MC 04. Polarized sunglasses lenses: protect against reflections in conditions of strong glare, especially at sea, in the mountains, or on the road. Category 3 lenses: protect against glare in sunny conditions. Protect 100% against UVA and UVB.