Baseball Cap Polyester Mesh Trucker Hat for Men and Women Trucker hats are suitable for daily use, camping, biking, jogging, hiking, golf, fishing, or travel, music festivals and other outdoor activities, they can also be good gifts for your friends and family. Mesh cap is 4.72 inch/ 12 cm high, with adjustable buckle, suitable for most head circumference of 22.05 to 24.41 inch/ 56 to 62 cm, the brim is 3.54 inch/ 9 cm wide.