Oakley lenses are designed and tested under extreme high mass and high velocity circumstances to ensure uncompromising protection across a wide range of demanding conditions.Specifications and Features: Plastic frame Composite lens non-polarized Interchangeable Square O Icons Comfortable fit on medium to large faces via extended wrapped frame geometry Precision and durability of sculpturally integrated hinge mechanisms with dual action CAM Durability and all-day comfort of lightweight, stress-resistant O Matter frame material Oakley HDPolarized -Minimized glare via technology that produces the best polarized lenses on the planet with greater