Taking inspirational cues from the classic film and music stars, the Oakley Holbrook XL sunglasses never look out of place. Prizm lens treatment controls light transmissions for maximized contrast and clarity. Polarized lenses on certain models helps to cut glare; see the color name for details. Six-base lens curvature offers optimized peripheral vision and side protection. Offers the protection and impact resistance that meets ANSI Z87.1 basic impact standards. O Matter frames are formulated for high durability and high flexibility for improved safety during impact. Maintains resistance to ultra-violet radiation, humidity, thermal shock, and chemical exposure. Three-Point Fit system holds lenses in precise optical alignment for supreme comfort and performance. Metal bolts accents on front of frame. Metal Oakley icon accents on side arms.