Spy Optics Cooper Sunglasses % Visible Light Trans. Cat. Tint Base 18% 3 Bronze SPY+ Happy Boost™ Lens technology evolves the original Happy™ Lens, enhancing color, contrast, and clarity while boosting mood and alertness. Designed for those serious about vision in the elements, it maximizes color contrast up to 30%, maintains white balance, and features a premium polarizer. Whether on trails, chasing horizons, or fishing, this lens brings the world to life like no other.