Smith Mirage ski helmet size small - fits 51-55” head circumference - never used - purchased and then never skied! Color is matte white with gray interior lining. Smoke free pet free home. Features of Smith Mirage Helmet: Protection Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that's lightweight (16 oz)and durable. Zonal Koroyd coverage for lightweight, energy-absorbing and ventilated impact protection Fit/ Integration Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac ventilation system integrates with Smith goggles for fog-free lenses Adjustable dial fit for easy, on-the-go size adjustment Miscellaneous features Regulator climate control allows easy, one-handed vent adjustment 14 vents Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible Plush, fuzzy lining adds warmth and comfort Aleck audio systems compatible