Retrospec Traverse H1 Ski Snowboard Helmet, Convertible to Bike/Skate Adult Sm Retrospec RS Travers H1 Ski Helmet Convertible To Bike/Skate Helmet Matte White Adult Small 55 - 59CM Features: 10 vents for ultimate temperature regulation with unyielding ABS shell exterior and firm, shock-absorbent EPS interior Certified ABS exterior and EPS Foam interior to provide you, the rider, with top of the line quality and protection Helmet safety certifications include EN 1077:2007 for Ski Helmets and CPSC 16 CFR, Part 1203 for Bicycle Helmets Includes goggle clip to keep eyewear attached removable plush earmuffs for warmth and protection ErgoKnob Adjustable Dial is a simple one-handed twist dial that tightens and loosens the framework built into the helmet for a customized fit Listing and template services provided by inkFrog