New Bolle Helmets 30820 Shiny Black Robot 49 53cm B Kid Black Yellow 49 53cm:Black Yellow Aerospace grade 5150 alloy is high performing Constructed from Rawlings world Aerospace grade 5150 alloy is high performing and ultra durable Single piece design is built to perform anywhere in the lineup a unique porous arch foam system Lightweight Ski Helmet Fully Integrated Click To Fit™ System CE ASTM Approved ABS Shell On The Top For Impact & Penetration Protection Inmold Construction For weight Savings & Style Goggle Retainer Clip For Perfect Helmet Goggle Integration Adjustable Padded Chin Strap with Quick Release Buckle Adjustable Vents Two Front & Eight Holes Constantly Draw Away Hot & Humid Air From The Head Six Top Vents Allow You To Customize The Level Of Airflow Through The Helmet Removable Washable Ear Pads & Padded Liner Audio Kit Compatible