The Loose Fit Crew Shirt from 5.11 Tactical is built from ruggedized polyester to provide maximum durability and rip resistance in any environment, keeping you cool, comfortable, and in control all day long. Durable, comfortable and functional, Moisture wicking technology, Underarm mesh panels, 82% polyester, 18% spandex, Natural fit, Saddle-shoulder design, Quick-dry fabric, Flat-lock Seams for comfort, Imported