RS-40Nearly 5 years in the making, the RS 40 is built upon 40 years of sport protective R&D. Tested to ASTM F803 standards this next generation style features new eye rim cushioning, temple padding, and an improved venting system that protects eyes from higher energy collisions while also enhancing all day comfort. The RS 40 features an over molded temple for grip and stability during movement and is available in a 49mm and 52mm eye size for youth athletes