Giro Zone MIPS Helmet - Men's: The Zone MIPS features innovative Hybrid Construction, which combines the ding-resistant durability of a Hard Shell upper with the lighter weight of In-Mold Construction lower and sidewalls. The Zone MIPS is packed with amenities including the In Form 2 Fit System; a quick-fit Vertical Tuning adjustment system for proper helmet positioning; MIPS technology; fully adjustable venting; Fidlock magnetic buckle closure; and a sleek, integrated POV camera mount FEATURES POV camera mount included FidlockA(R) magnetic buckle closure PolartecA(R) Power Grid(TM) padding Compatible with aftermarket Giro audio systems by Outdoor Tech Seamless Compatibility with all Giro goggles Compliance: CE EN1077 SIZES S: 52-55.5cm M: 55.5-59cm L: 59-62.5cm CONSTRUCTION MIPSA(R) - Multi-Directional Impact Protection System Hybrid Construction - Durable Hard Shell Ventilated Upper - Lightweight In-Mold lower and sidewalls Low-profile design FIT SYSTEM In Form(TM) 2 Fit System On-the-Fly Vertical Tuning VENTILATION Thermostat Control(TM) adjustable venting Stack Vent