Material: 100% cotton, made of high quality material, Soft on the skin, Light weight. Features: NASA inspired design embroidery on front, color blocked half mesh back trucker cap has adjustable snap back closure. Matching: astronaut helmet match with a classic t-shirt and jeans look. Perfect for a casual style, all season. Occasion: nasa cap is very suitable for daily, Hiking Trips, Vacations, sports, running, gym, camping, fishing, hunting, barbecue. Specifications: The mask size is 2.95 inches, the brim size can be adjusted between 21.3-23.6 inches, and the depth of the hat is 4.72 inches.