4-ounce, 51% polyester/49% cocona 37.5 polyester. FastDry with 37.5 Technology makes this our fastest drying gear. Rugged Flex technology for ease of movement. Fights odor. Traditional boxer fit. Gusset at inseam for comfort and easy movement. Fly opening. Smooth flatlock seams enhance comfort. Comfortable elastic waistband with Carhartt logo. Tagless. Carhartt Force Extremes labeling printed on front.