100% Polyester CUSTOM BASEBALL CAPS: You can create your very own customized Baseball Caps. Choose the text or picture you wish us to print or send your picture that you want to design. MATERIAL:100% Polyester Foam Front, Mesh Breathable Back, Mesh Back Trucker Hats in 9 Colors ,there’s always one for you. SIZE: Adjustable from 17 to 24,The adjustable strap is stretchy and has enough length. perfect fit your head girth very well. OCCASION: Ideal for surfing, runners, golfers, tennis players, and any indoor or outdoor activities. NOTE AND SERVICE: Any issues with your order, please contact us directly, we’ll respond within 24 hours.