Oakley Sylas Colour:Olive Ink Frame Prizm Tungsten Polarized Lense ATS® technology provides ergonomic support ATS® technology provides ergonomic support on uneven terrainShock Shield® technology diffuses heel impact while absorbing shock and helping minimize fatigueRemovable Energy Max™ anti fatigue insole for maximum comfortDuratread™ sole is extremely durable while still letting your foot flexFive row stitch patternAriat is including you in its dedication to environmental stewardship the best days end with the messiest saddles contrast and detail to make the most of any activity• FIT: Three point Fit is designed for comfort and to hold your eyewear in precise optical alignment• LIGHTWEIGHT: Lightweight O Matter™ frame material provides durability and all day comfort• PRESCRIPTION: Available with Oakley Authentic Prescription lenses for athletes of all levels with RX needs NOT SUITABLE FOR DRIVING AND ROAD USE