Flame-resistant (FR) clothing is primarily designed to protect workers from hazards such as flash fires, arc flashes, and extreme heat exposure. While protection is the main objective, one critical factor often overlooked is ergonomics—how the clothing fits, moves, and interacts with the worker’s body during long hours of physically demanding work. Poorly fitted FR clothing can reduce productivity, increase fatigue, and even create safety risks. This is why ergonomics in FR clothing is just as important as flame resistance itself.