The Crue MipsA(R) delivers classic style and park-worthy performance for young shredders. It features the Multi-Directional Impact Protection System (which can provide more protection in certain impacts), durable Hard Shell construction, ample venting, and now updated with our In Form(TM) Fit System. SPECS:- CIRCUMFERENCE: 48.5-52 CM CONSTRUCTION: HARD SHELL CONSTRUCTION EPS FOAM LINER COUNTRY OF ORIGIN: CHINA VENTILATION : SUPER COOL(TM) VENTS FIT SYSTEM: IN FORM(TM) FIT SYSTEM - EASY TO DIAL IN A CUSTOM FIT IN SECONDS, EVEN WITH GLOVES ON. ERGO-FRIENDLY DIAL AT THE BASE OF THE HELMET THAT PROVIDES UP TO 6CM OF ADJUSTMENT AND ENHANCED STABILITY VERTICAL TUNING PRODUCT WEIGHT: 520G (SIZE MEDIUM) ELECTRONICS COMPATIBILITY: COMPATIBLE WITH AFTERMARKET GIRO AUDIO SYSTEMS BY OUTDOOR TECH CERTIFICATION: CE EN1077 HIGHLIGHTS: REMOVABLE EAR PADS REMOVABLE GOGGLE RETAINER SEAMLESS COMPATIBILITY WITH ALL GIRO GOGGLES MIPSA(R) EQUIPPED