The Oakley Turbine Sunglasses are designed to have clean lines and an active look, with interchangeable icons plus inset zones of sure-grip Unobtainium.A lightweight, durable O Matter frame offers all-day comfort, while the patented High Definition Optics ensures unrivaled visual clarity and protection.Their precise Three-Point Fit maximizes comfort and retains the lenses in precise optical alignment, and the Unobtainium earsocks actually increase grip when you sweat.They have a premium Iridiumlens coating which is designed to balance light transmission and reduce glare, being made with superheated metal oxides.This stylish pair of sunglasses has been built to Oakley\'s high standard and quality, featuring the following integrated technologies:High Definition Optics High Definition Optics (HDO) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance.Unobtainium A soft hydrophilic synthetic, it increases adhesion when wet to grip better when you perspire. This makes it ideal for earsocks and nose pads in performance eyewear. Snagless Nose Pads A hassle-free nose pad for women\'s eyewear, this patented innovation is an adjustable design that won\'t snag or pull your hair. Plutonite Lens One of the most optically pure materials used in eyewear today, it maximizes clarity and impact resistance while filtering out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. Not a coating, the UV protection is from the lens material itself.Impact Protection Backed by decades of innovation, Oakley performance eyewear offers uncompromising protection against high-velocity and high-mass impact. The protection is a benefit of the premium materials and unique architectures of Oakley lens/frame combinations.UV Protection Eye damage attributed to ultraviolet light includes cataracts, pterygium and macular degeneration. Our Plutonite lens material filters out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. The protection is from the lens material itself.Three-Point Fit A patented innovation that ensures the frame makes contact only at the bridge of the nose and the sides of the head. It holds lenses in precise optical alignment with a secure fit that eliminates the pressure points common with frames that hook the ears.O-Matter A stress-resistant frame material that withstands environmental extremes, it is lightweight yet highly durable. Controlled flexibility enhances impact resistance while contributing to the all-day comfort of frames made with this innovative synthetic.