The sun visor is made of high-quality anti-ultraviolet plastic panels, which can block ultraviolet rays in the sun, reduce direct damage to the face, and maintain good eyesight. It has a special design, the top is empty, it is cool in summer. This sun visor is UV resistant, windproof, waterproof, high temperature resistant, easy to clean, high toughness, and easy to carry. It features a rear adjustable elastic strap design. The cap’s size is 21 1/4-23 5/8 inches, this size fits the head size of most adults. This hat can be stretched with elastic straps at the back and is suitable for both men and women. It is ideal for cycling, fishing, traveling, golf, beach and outdoor sports, etc. It can protect you from the sun. A great idea for your friends, family.