Designed with an adjustable chin strap to prevent it from blowing away in strong winds! Perfect for outdoor activities such as fishing, cruising, hiking, cycling, and marathons! ◆ Condition: Brand new ◆ Color: Black ◆ Size: Free size 　　　　Head circumference: 57cm You can also wear it stylishly as a ten-gallon hat by fastening the buttons on the sides. The inside is highly absorbent and quick-drying, so you can use it with confidence for sports on hot days in spring and summer. It's foldable, so you can easily put it in your bag! It's convenient and doesn't take up much space, even fitting in a small waist pouch. The color is the most popular black, and its simplicity is its charm. ★ Please note that this product is an overseas product and may have some imperfections in its construction. Packaging is simple. Returns due to customer circumstances are not accepted. Please understand this before purchasing. Thank you.