Stop sharp edges, wire, and screws from scratching your head—these hats shield you from low-hanging hazards. They have a layer of tiny protective plates on top of a layer of polyester for a strong, durable guard against gashes and scrapes. On a scale of A1 to A9 where a higher rating means more protection, these are rated ANSI level A7. They protect against sharp materials such as metal, glass, and wood.