A modern take on a classic style, the Oakley Top Knot features a cat-eye silhouette frame constructed from a combination of O-Matter nylon and C-5 metal. Also precision machined from C-5 metal, the temple arms are coated in Oakley's Unobtainium so you can freely and confidently move throughout your day. Features of Oakley Top Knot Sunglasses Top Knot is part of Oakley's all-new Women's Collection, designed to deliver the ultimate in fit and comfort in an on-trend design Available with Prizm lenses that are designed to enhance color, contrast and detail to make the most of any activity O Matter frame material, combined with C-5 metal provides durability and all-day comfort to keep up with life on-the-go Protect your eyes like you protect your skin with a lens that offers 100% UV Protection Comfortable Unobtainium nosepads so the frame doesn't slip off your face Flexible spring hinges to help provide more comfort and durability Oakley Top Knot Matte Brown Tortoise w/PRIZM Sapphire Polarized Lenses OO9434-0656 in Matte Brown Tortoise/Gold