Confidence in Motion Among the Manifest&';s extraordinary features is Spherical Technology, which utilizes a ball-and-socket design powered by MIPSA(R), the market-leading brain protection system that helps to reduce rotational forces. Spherical Technology allows the outer liner to rotate around the inner liner during a crash and also eliminates contact with a hard-plastic slip-plane. In addition to leading head protection, the Manifest offers wide-open airflow thanks to the AURA reinforcing arch, which bolsters structural integrity while allowing air to flow into the massive Wind Tunnel vents. You&';ll also get a comfortable, secure fit with the easy fit and positioning adjustments built in to the Roc Loc Trail Air fit system and plush, antimicrobial XT2 padding for exceptional sweat absorption. FEATURES SPHERICAL TECHNOLOGY, POWERED BY MIPSA(R) CIRCUMFERENCE - 55-59 CM IN-MOLD CONSTRUCTION WITH PROGRESSIVE LAYERING FULL LOWER HARDBODY(TM) COVERAGE COUNTRY OF ORIGIN - CHINA 19 WIND TUNNEL VENTS WITH INTERNAL CHANNELING ROC LOCA(R) TRAIL AIR FIT SYSTEM FIDLOCK MAGNETIC BUCKLE SLIMLINE WEBBING IONIC+ ANTIMICROBIAL PADDING GOGGLE GRIPPER PRODUCT WEIGHT 340G (SIZE MEDIUM CPSC, CE) CERTIFICATION COMPLIES WITH THE US CPSC SAFETY STANDARD FOR BICYCLE HELMET FOR PERSONS AGE 5 AND OLDER E.U.: CE EN1078