This athletic visor hats are made of high-quality polyester material, which is light and breathable and comfortable to wear, the empty top design allows you to shade while avoiding the sultry top of the head. Adjustable HOOK & LOOP back closure, is very suitable for most head shapes, and it meets all the requirements for comfort and functionality. Perfect for everyday use and outdoor activities such as baseball, golf, volleyball, running, walking, cycling, hiking, vacations, festivals, and more.