The Holbrook look, with its iconic keyhole nose bridge and metal rivets, is now available in an L version for larger face shapes. However, the transition to the larger size does not compromise the comfort that is always provided by the ultra-light O Matter frame material. The lenses made from pure Plutonite filter 100% of all UV rays, while XYZ Optics ensure optical clarity from every angle. 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.