Material: Cotton, cool mesh back unisex design for boys girls kids and suitable for both daily look and outdoor activities. This is perfect gift for your kids, your lovely son, and daughter Super Heroes design will fully show your style. Mesh back allow for air to pass through to help keep your head cool and reduce sweating Breathable mesh design more comfortable to wear. Portable, packable, and easy to stuff in a backpack, travel bag, or jacket pocket, our colorful trucker caps are perfect for outdoor summer wear Adjustable, one size fits most. Size: 18-22 inch. Adjustable Snapback closure and Ideal for adventures outside, including travel, hiking, camping, sports, fishing, golfing, and much more Trusted Satisfaction ?C LifeStoreHouse hats are designed for comfort, style, and long-life wear. Contact us with any questions or concerns for fast support.