bell-giro-super-air-spherical-helmet
bell-giro-super-air-spherical-helmet, Bell Trail Boss The Super Air is the first trail helmet to offer Spherical Technology(TM), making it our most advanced trail helmet. Period. Spherical Technology's Ball-and-Socket design, powered by MIPSA(R), helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash.This combination of outstanding safety, optimized ventilation, and extreme lightness brings epic achievements within reach-on any trail, in any terrain. When you're ready to step up, upgrade by adding the optional chin bar. See you on the trail! FEATURESCIRCUMFERENCE - 52-56 CMFUSION IN-MOLD POLYCARBONATE SHELLPROGRESSIVE LAYERING(TM)ADJUSTABLE VISORCOUNTRY OF ORIGIN - CHINAOVERBROW VENTILATION(TM)FLOAT FIT(TM) PRODUCT WEIGHT 410G (SIZE M) CERTIFICATION COMPLIES WITH THE US CPSC SAFETY STANDARD FOR BICYCLE HELMET FOR PERSONS AGE 5 AND OLDER