The Nike Maverick features a Ventilated rubber nose bridge that reduces fogging, Lightweight and durable nylon frame, Flexible temple arms for optimal fit, enhanced grip and stability and Tapered temple arms that fit easily under a hat. This product offers our standard high quality, distortion-free SF-6 Schott Glass Radiation-reducing lenses with .75mm lead equivalency. The Model RG-NI-MAVERICK fits best for Large head sizes.