Layer up for your next outdoor adventure with this U.S. Military PolartecA(R) Base Layer Shirt. SilkWeightA(R) 100% polyester fabric, with next-to-skin design that's lightweight and extremely comfortable. Great for both cold and warm weather thanks to Polartec's PowerDry technology that absorbs moisture and makes them highly breathable. Polartec PowerDry technology absorbs moisture and helps you dry quickly SilkWeight 100% polyester fabric for top comfort and breathability Comfortable next-to-skin design for easy layering Machine wash and dryNote: This is the Shirt only, no pants included