Features of the Smith Juniors' Glide MIPS Helmet Lightweight in-mold construction fUses the exterior shell and EPS foam for a one-piece design that's lightweight and durable MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head Adjustable dial Fit for easy, on-the-go size adjustment Plush, fuzzy lining adds warmth and comfort Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac ventilation system integrates with Smith goggles for fog-free lenses Fixed vents for consistent airflow