Campo T-ShirtUltra Soft Fabric: 60% cotton 40% polyester blend Athletic Fit: That runs true to size (Size Guide) Machine wash cold with like colors on gentle cycle and tumble dry low. We recommend washing before wearing. In some cases, there can be color transfer from garments onto light colored clothing, bags, seating etc. prior to laundering for the first time. This is mainly the case with printed garments especially those with a lot of color darker color.