The POC Auric Cut Backcountry SPIN is a great helmet for athletic skiers who want protection and style on the mountains, both in the resort boundaries and outside the ski area. POC's patent-pending SPIN Technology has SPIN Pads in between the liner and shell that move relative to the helmet should an impact occur by shearing from the shell to absorb the impact rather than pass it on to your head. A durable ABS Shell is very lightweight and protective. Adjustable Vents help you regulate the airflow through the helmet to prevent overheating when you are hiking or skinning. POC's Size Adjustment System helps you fine tune the fit to be both comfortable and safe. In the event of an accident in the backcountry a RECCO rescue reflector is integrated into the top of the helmet. Patent-Pending SPIN Technology, Multi-Impact EPP Liner, Durable ABS Shell, Integrated RECCO Rescue Reflector, Adjustable Ventilation, Size Adjustment System, Detachable Goggle Clip, Compatible with POC Aid Communication Headset (Sold Separately), Certifications: ASTM F 2040 / CE EN 1077, Warranty: One Year, Race: No, Category: Half Shell, Audio: Audio Compatible, Brim/Visor: No, Ventilation: Adjustable, Adjustability: Partial, Year Round Capable: No, Shell Construction: Hard Shell, Model Year: 2019, Product ID: 540009, Model Number: 10499 1505 XS/S, GTIN: 7325540914550