Size: Circumference: 55-60cm/21.6-23.6 inches; Brim width: 6cm/2.4 inches, Hat height: 8cm/3.1 inches, the size differs slightly due to manual measurement. The buckle on the back can be adjusted according to your needs, avoiding being too tight or too loose, without deforming or discoloring. Breathable fabric: This flat top cap is made of vintage durable washed cotton material, unisex, soft, lightweight and comfortable. Function: The comfortable and breathable sweatband has the function of absorbing sweat and preventing discoloration of the military cap. The retro look is matched with the retro metal badge to show your different temperament. Design: This army cap is designed with a three-dimensional brim and uses a fine sewing process to make the military hat more fashionable, while providing more protection against sunlight and UV rays, it is a must-have for many outdoor activities: military training, hiking, mountaineering, fishing, camping, riding and running.