Yes and no. The airflow collar is an optional accessory for the Canteen™ Pro. The Canteen™ Pro will work right out of the box without it, but some people may want to loosen or tighten the draw. Those people will need the airflow collar. If you use 1.2Ohms, 1.0Ohms, or 0.8Ohms coils, we strongly recommend using the airflow collar. Low resistances need more airflow or the juice will taste burnt.