Drawing on a timeless classic look, the Holbrook from Oakley combines Oakley performance and protection with a style that screams American cool. Named after a small Arizona town along the edge of the painted desert and the petrified forest on historic Route 66, the Holbrook blends its classic look with modern materials and technology. This comfortable and lightweight design combines a stress-resistant O-Matter frame with proven Plutonite lenses and a Three-Point Fit design that ensures precise optical alignment. The Holbrooks high-performance lenses filter out 100% of UVA/UVB/UVC and harmful blue light up to 400nm, while the Iridium coating reduces glare while balancing light transmission. The 6-base lens curvature enhances peripheral vision and side protection. Select styles feature Prizm lenses which are specially tuned to maximize vision and bring out fine detail, others are part of Oakleys Standard Issue series which are designed for military applications. These Oakley sunglasses meet or exceed ANSI Z87.1 standards for optical clarity and impact resistance.Made in USA. About Oakley lenses: Prizm:Designed to deliver ultra-precise color tuning for any environment. By fine-tuning individual wavelengths of color to make everything vivid and vibrant Prizm sharpens visual acuity to reveal nuances that would otherwise be missed by the naked eye. Iridium:This special metal oxide coating allows Oakley to fine-tune lenses of any color. The iridium coating regulates contrast, glare, reflection, light transmission and light absorption, tailoring the lenses to better fit specific conditions. Gradient:Offers a smooth transition in shading from a darker top to a lighter bottom while still retaining true color perception. Photochromic:A premium option for select single-lens Type: Non-Polarized.