SPECIALIZED AMBUSH COMP HELMETProtect your headWhen you're out riding your bike, you should always have a helmet on. You can never predict when you're going to crash so it is best to always stay prepared with a helmet. The Specialized Ambush Comp Helmet is a lightweight helmet that has extended coverage for increased protection. It features a Composite Matrix internal reinforcement that allows for better ventilation to keep riders cooler when it's warm, an in-molded shell that improves the strength and reduces the weight of the helmet, a Mindset 360 fit system so you can dial in the perfect fit, and a 4th Dimension Cooling system. Stay safe with a great helmet on the trail and get a Specialized Ambush Comp Helmet.REVIEWSBike Mag - "One of the Ambush's best features is its breathability. The large vents do a nice job of keeping air flowing over your head and through the helmet on hot summertime rides." - Ryan CleekFeaturesIn-molded shell improves strength and reduces weightMindset 360 fit system provides a secure and comfortable fit4th Dimension Cooling system optimizes ventilation so you stay cooler in warm weatherSpecialized Part Number: 60218-0343SPECIFICATIONSCore MaterialEPS FoamClosure systemMindset 360Safety CertificationsCPSCIntended UseTrail, All-MountainWeight- SizingSizeSmallMediumLargeExtra LargeHat Size6-3/8 - 76-3/4 - 7-1/47-1/8 - 7-5/87-3/8 - 7-7/8Head Circumference (in)20 - 22"21-1/4 - 23"22-1/2 - 24"23-1/4 - 24-3/4"Head Circumference (cm)51 - 56cm54 - 58cm57 - 61cm59 - 63cm