Adjustable buckle closure: adjustable one size most with buckle closure on the back. Size: approx. 56-58 cm Adjustment strap between 7.5 cm long, flat to 17.5 cm wide. Prefect for Outdoor: Perfect packable for traveling, hiking, gardening, fishing and other outdoor activities. Our cap is made by High-quality material, can give you light weight and comfortable wearing feeling. For the Seasons: Spring, Summer, Autumn. Our products have good quality and reasonable price, we believe that your waiting is worth it. So please wait for it patiently!.syi