Get your swag on and conquer the next safety hazard with the Swagger® SR4 Safety Glasses. Core elements of this series include a lightweight dual lens frame design, athletic bayonet temples, and soft TPR permanently bonded all the way from the temple tips to the nose pads. The SR4 Series is dielectric, meaning that they contain no metal pieces. These high quality safety glasses have a lifetime frame warranty and are engineered to provide the highest level of innovation. Choose the best safety glasses, choose MCR Safety!