100% waterproof – 1.97 inches wide
because there are two knots inside the cap, the elastic band can be repositioned.
New single-size head circumference: maximum 22 to 23.10 inches (please control head size)
light weight, easy to fold! The cap can be folded into its own bag.
Adjustable, suitable for any size! Light weatherproof cap. With a cautious clamp, it`s easy to put it in a bag or tie it to your pants.