The Oakley Batwolf™ sunglasses feature a single continuous lens sweeps across a comfortably lightweight O Matter™ frame, and two interchangeable icons are included to change your look in seconds. Lightweight O Matter™ frame material with Square O metal icon accents Interchangeable accessory metal icon accents included Oakley performance shield lens technology with High Definition Optics HDO™ One size fits all Frame Size: M (127mm frame width) Regular Fit: a large lens front designed to fit those with an average-sized head High Bridge Fit: offers a more secure and comfortable fit if you have a high nose bridge and lower cheekbones. A good choice if your nose bridge sits above your pupils