Rigorous hot weather testing of this shirt resulted in the same word coming up over and over - Air. "This thing is as light as air." "The airflow in this is amazing." With replies like that from some hardcore hunters, it was only fitting that the Air Series was born. Lightweight, ultra-breathable, moisture-wicking and extremely quick-drying, the Air Crew Shirt is ready for those sweltering hot, hardworking hunts.