The Zoom Jr. combines Smith's lightweight in-mold construction with a super soft fleece liner for all-day comfort. Airflow Climate Control. The Climate Control feature on select Smith helmets gives the wearer multiple ventilation options when conditions are varied or changing throughout the day. Adjustable Dial Fit System. The year-round Zoom Jr. helmet incorporates Smith’s adjustable Dial Fit System for a perfect fit. AirEvac Ventilation System. For the helmets, the most important factor in integration is the AirEvac ventilation system. This is the bridge that allows goggles and helmets to function as one system, venting warm moist air away from the goggles, through the helmet climate control system and ultimately away from the head.