Cách sử dụng
A visor is a piece of material that can be attached to a hat or helmet to protect your face and eyes from the sun, wind, rain, or other elements. Visors are often used by athletes, such as golfers, tennis players, and football players, as well as construction workers and other outdoor workers. You may also see visors on vehicles, such as cars, to block out the sun or rain from the windshield. Visors are useful in many situations where you need protection from the elements but want to keep your head cool and uncovered.