MOON CE Certification Skiing Helmet Ultralight Ski Helmet Extreme Sports Skateboard/Snowboard Helmet PC+EPS Size 52-64CMType: Helmet Season: Universal Sport: Skiing Material: Composites Brand Name: moon Applicable People: Men Style: Portable Model Number: MS 86 Age: >6 Years Head Circumference: S: 52 55CM,M: 55 58CM,L: 58 61CM,XL: 61 64CM Place Of Origin: China Mainland Type: Half covered Age: Men ,Women ,Teenager Feature: Ultralight Integrally molded Certification: CE EN1077 Weight (g): 370g or 550g Size: S: 52 55CM,M: 55 58CM,L: 58 61CM,XL: 61 64CM Air Vents: 14