Flame-resistant and arc flash pants and overalls help wearers avoid burns when working in areas with sparks, open flames, and other fire hazards. Pants cover the legs, and overalls cover the legs and front of the torso. Also called FR pants and overalls, flame-resistant pants and overalls are made of materials that resist burning or melting. Arc flash pants and overalls protect wearers from high heat and burns when working with or near electrical equipment where electric arcs may heat surrounding air to extreme levels. Flame-resistant and arc flash pants and overalls are worn over the users' work clothing and provide thermal insulation to keep wearers comfortable.