THE WOMENS RADIX MIPS W HELMET IS FOR THE RUGGED ADVENTURER WHO APPRECIATES A PERFECT FIT THE SUN STAYING OUT OF THEIR EYES & PLENTY OF VENTILATION. The highly adjustable Roc Loc 5.5 Mips system means that you can customize fit & feel for enhanced stability & long-range comfort while providing an added measure of protection from rotational forces in the event of an angled impact. The P.O.V. visor offers 15 degrees of adjustment & the tough polycarbonate outer shell is fused permanently to the EPS foam liner using our In-Mold™ construction process to enhance durability & ventilation without excess bulk. SPECS CIRCUMFERENCE 55–59 CM CONSTRUCTION IN-MOLD POLYCARBONATE SHELL WITH EPS LINER COUNTRY OF ORIGIN CHINA VENTILATION WIND TUNNEL VENTS WITH INTERNAL CHANNELING FIT SYSTEM ROC LOC 5.5 MIPS PRODUCT WEIGHT 316G (SIZE MEDIUM CPSC)300G (SIZE MEDIUM CE) CERTIFICATION COMPLIES WITH THE US CPSC SAFETY STANDARD FOR BICYCLE HELMET FOR PERSONS AGE 5 & OLDER E.U.: CE EN1078 HIGHLIGHTS P.O.V. ADJUSTABLE VISOR QUICK DRY PADDING SLIMLINE WEBBING