The Oakley Sylas Prizm Grey adult sunglasses present a classic frame with reliable features such as a hat compatible design with an increased extended periphery. They are made of lightweight and stress-resistant O-Matter® material and feature the PrizmTM lens technology that maximizes colour contrast and enhances visibility so you can make the most of your outdoor activities. Designed to adapt to medium-sized faces, those glasses feature a high bridge fit comfortable for those with a high nose bridge and lower cheekbones.