The Suncloud Topsail Sunglasses are an ultra-modern take on a classic style, that delivers exquisite sun protection and visibility. Suncloud crafts the Topsail's injection-molded frames from optical-grade TR-90 Grilamid nylon, ensuring a great blend of durability, flexibility, impact resistance, and comfort. The Topsail's polarized lenses guard against 100% of UV A/B/C radiation and significantly cut down on both ambient and direct glare. Suncloud's glare-reduction technology screens out horizontal reflective light rays that interfere with visibility.