Sandbox Icon Snow Helmet. The Icon combines a sleek, and timeless silhouette with our superior patented venting and airflow system, previously only available on the Classic 2.0 model. The best of both worlds, the Icon provides style and protection, a low and comfortable profile and a cooler ride. Features: - Removable vented comfort liner - Patented vent system with three vents - Removable padded ear covers - Removable goggle trip clip - ABS Shell + EPS Liner - Imported Size Guide: - Medium : 21.7" - 22.8” - Large : 23.2” - 24.0"