With a minimalist design and technology to boot, the Smith Optics(R) Code Helmet keeps you protected during your next run. MIPS technology absorbs force, and delivers superior safety and protection during multi-directional hits. The Code boasts plenty of ventilation to keep you cool, dry and comfortable, while still minimizing fog from your goggles. FEATURES: Adult fit Minimalist design; low-profile MIPS technology delivers skate-style protection MIPS (multi-directional impact protection system) technology MIPS technology absorbs oblique forces through a slight rotation of the outer shell in relation to the liner Aerocore(TM) construction with Koroyd(R) technology AirEvac2 technology pushes hot air out and cool, dry air through while keeping goggles clear of fog Six-vent system for maximum airflow and climate control Knit liner for a "beanie" comfort and feel Custom fit with the adjustable BOA(R) FS360 fit system Fidlock(R) technology and a Wayfinder strap offer easy, one-handed on/off Compatible with most snow goggles Removable goggle lock Compatible with Outdoor Tech(TM) audio systems (audio system not included) SIZING: Small: 51-55 cm Medium: 55-59 cm Large: 59-63 cm X-Large: 63-67 cm