The Pro Dry® CAT 1 FR short sleeve shirt, originally developed and tested by the U.S. Military, provides the wearer with unmatched comfort and performance that meets and exceeds the challenges of moisture management encountered daily on the job. True-Flat™ high-density seams and tagless neckline offer true comfort experience, while increased fabric durability and improved stretch provide longer-lasting wear and flexibility. Arrive comfortable, leave comfortable.