The Holbrook look, with its iconic style featuring a keyhole nose bridge and metal rivets, is now available in a larger version for bigger face shapes. However, the transition to the larger size does not compromise comfort, which is always ensured by the ultra-light O Matter frame material. The lenses made from pure Plutonite filter 100% of all UV rays, while XYZ Optics provide optical clarity from every angle. High Definition Optics lenses All Oakley lenses feature HDO technology with the following advantages. Conventional lenses can distort images. HDO precision provides a less distorted view due to a complete field of vision. With regular lenses, objects are not actually where you see them. HDO offers a more realistic visual image, so your brain doesn't have to work harder.