The Giro Ledge Ski Helmet features a clean, minimalist skate-style design with Hard Shell Construction built for street and park riding. Under-the-hood muscle meets modern technology with removable Auto Loc 2 Fit System and ample venting. The Ledge is super modifiable with removable goggle retainer and earpads to get just the right look. Fit System: Auto Loc 2 Fit System - removable, On-The-Fly Vertical Tuning Construction: Hard Shell Ventilation: Super cool vents Features removable goggle retainer and removable earpads Compatible with aftermarket Giro audio systems Seamless compatibility with all Giro goggles Certification:ASTM F2040-11/CE EN1077 Head circumference: S, 20.4-21.8 inches; M, 21.8-23.2 inches; L, 23.2-24.5 inches
