What Our Gearhead® Experts Are Saying: "These sunglasses offer an insanely clear and wide field of vision, and the cylindrical lens enhances depth perception. They fit seamlessly with my helmet, and the grippy temples keep them secure even on rough trails."Built for high-speed rides and long-distance touring, these Memento sunglasses deliver clarity, durability, and a seamless helmet fit for ultimate performance. The 1. 8mm cylindrical lens provides a wide field of vision and high-impact resistance, ensuring clear sightlines and protection on the road or trail. The TR90 Polyamide frame is both lightweight and fatigue-resistant, making it perfect for all-day wear. A hydrophobic and oleophobic coating keeps lenses clean and smudge-free, while grippy temple inserts ensure a secure fit no matter how rough the ride gets.