The Holbrook has a timeless classic design that fuses with modern Oakley technology. Inspired by the TV heroes of the 1940s, 50s and 60s, this design embodies the spirit of discovery and adventure. The iconic American frame design gets design accents from metal rivets and Oakley symbols, and is perfect for those seeking a balance of performance and style. Impact Protection Oakley lenses are designed and tested under extreme conditions of mass and speed to provide uncompromising protection in a variety of demanding environments. Exclusive PrizmOakley lens technology is designed to optimize color and contrast and enhance detail visibility. The frame is made of lightweight O-Matter material with the iconic Square O metal logo and rivets on the front lens. 100% UV protection. Curved lens (base curve 6) with HDO, light transmission: 17%.