The Kuhl 7111 FlackJak Shirt is designed with a 70/30 cotton-nylon blend for easy care, durability, and a soft hand. KÜHL engineered articulated elbows utilzing stretch panels. A center-back strech panel adds even more range of motion. To accomplish your mission, you’ll need some improvements to your basic equipment. The Flak Jacket will keep you on course to complete your quest.