MERGING KNIT AND WOVEN: The combat shirt is a merger of comfort and durability for tactical and military users who require the right tool for the job. In this case, the torso and sleeves are made of an abrasion resistant, durable 4.5 oz poly/cotton/spandex NEXstretch ripstop fabric in solid colors, while the torso is made of 5.2 oz 100% poly knit.