Specs: Youth fit Weight: 19 oz. Size: 48-53 cm (S), 53 - 58 cm (M) Design/Technology: Designed for all-season use Bombshell construction offers an injection molded ABS shell to withstand high-impacts with unparalleled durability, dent and ding resistance AirEvac(TM) 2 ventilation constantly moves warm, moist air away from the goggles through external vents, internal channels and the EPS liner Internal airflow adjusts with the regulator climate controller Regulator adjustable climate control with 14 vents allows quick modification to airflow and heat exhaust Climate control regulator adjusts with a gloved-hand Self-adjusting Lifestyle Fit system flexes for a perfect fit around wearer's head Lifestyle Fit system provides an elastic, forgiving fit that moves with your youngster Lateral adjustability accommodates a wide range of head sizes Removable goggle lock Bombshell earpads Safety Features: Snow and bike certified Certification: ASTM F 2040, CE EN 1077:2007 Class B, CPSC, CE EN 1078