STRETCH COMFORTABLE FIT - This hat is made of light-thin 4-way stretch tech fabric (nylon and spandex), which is soft, quick drying and breathable, Unstructured stretch construction provides a comfortable fit. the buckle on the back is more durable than conventional buckles, adjustable size best for 56-60cm, 22"-23 5/8". VENTILATION QUICK DRYING - The laser-perforated back panels not only add style but also ventilation for better airflow to keep you cooler, quick drying fabric and soft wicking sweatband provides added comfort. - Self developed visor technology that not only thin and light, but also maintains the caps proper shape and curve at all times. 2 inches(7cm) length provides better vision while blocking the sun. Unstructured design allows the hat to be folded into a backpack or pocket for easy carrying. Adjustable WIDELY USED SPORTS HAT - Our hats are available in multiple colors to meet different collocations. It is very suitable for daily activities and outdoor exercise, especially running, golf, gym, bushwalking, Jogging and so on. or playing baseball, cycling, fishing, It is a multifunctional sports hat.