Giro: THE DIRT IS CALLING The Fixture MIPS brings confident mountain bike style and breezy ventilation together in a compact design that complements nearly any ride -- especially when there's dirt under tread.Some of our best features, like In-Mold construction coupled with the ease and comfort of our acclaimed Roc Loc Sport fit system, offer the versatility  you need to ride everything from fire-road adventures to swooping singletrack trails.The Roc Loc also is seamlessly integrated with the Multi-Directional Impact Protection System (MIPS), which can redirect energy and provide more protection in certain impacts.  SPECS- Integrated Mips® brain protection system- Removable visor- Quick-dry padding- ReflectivityCONSTRUCTION- In-Mold polycarbonate shell with EPS linerFIT SYSTEM- Roc Loc® Sport MipsVENTILATION- 18 VentsUNIVERSAL FIT™ SIZE- UA 21.25”–24” / 54–61cm- UXL 22.75”–25.5” / 58–65cmCERTIFICATION- Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older