100% Cotton, Made in China Various Sizes: The Black Baseball Cap design can fit various sizes of heads with ease. Circumference: 22.1-24.4 inches. Brim: 2.75 inches. Crown: 4 inches. Breathable&Comfortable Shell Fabric: Cotton material has a good absorbent function; ventilation eyelet design increases the permeability of the hat. DIY CAP: You can design your own personalized baseball cap and make it by yourself. It is easy to embroider or sew a patch on our baseball cap. It is definitely a good solid color cap to design with Adjustable&Unisex Style: Each cap has an adjustable alloy closure. So our caps can be adjusted into multiple sizes, fitting most people with different head sizes. The unique and adjustable design also makes the caps suitable for both men&women. Suitability in Different Scenarios: Great choice for regular daily use and outdoor activities especially like bush walking, fishing, running, hitch-hike travel, baseball, cycling, golf, tennis.