Oakley Sielo Sunglasses Brown Tortoise PRIZM Bronze Polarized PRIZM Bronze Polarized. The mixed material BiO-Matter and C-5 frame material displays sophistication while Unobtainium nosepads provide no-slip grip. Designed for comfortability with three-point fit and soft touch earsocks Sielo keeps up with your active lifestyle from a day on the town to hikes on the trails and beyond. For enhanced color and contrast everywhere you go Prizm Lens Technology provides the details. Specifications for Oakley Sielo Sunglasses: Manufacturer: Oakley Application: Outdoor Age Group: Adults Gender: Unisex Features of Oakley Sielo Sunglasses WHEREVER YOU GO = The mixed material frame and seamlessly integrated performance features help cross this style from activities to daily life LIGHTWEIGHT AND DURABLE - The BiO-Matter frame front and ultra-lightweight C-5 metal temples provide durability and all-day comfort. BiO=-Matter is made from bio-materials having at least 56percent bio-based carbon content (representing ratio of castor oil to fossil sources) NO-SLIP GRIP - The Unobtainium nosepads help provide retention with a no-slip grip and all-day comfort. Propionate temple tips provide additional retention and comfort SEE MORE DETAILS - Available with Prizm lenses that are designed to enhance color contrast so you can see more detail Package Contents: Oakley Sielo Sunglasses Oakley OO9288-0357: Sielo Sunglasses Brown Tortoise PRIZM Bronze Polarized PRIZM Bronze Polarized