Fashion poly-cotton twill baseball cap, size for kids and adults is from  71/4" -23". 5 or 6 panels, pre-curved, or any other design or shape, embroidery, printing, applique embroidery all accept customise. The back can berass, plastic, velcro, metal buckle, any kind of strap closure. Other material as per buyer’s demand, such as polyster, poly-cotton, canvas, cotton, etc.