Protective sleeves reduce the risk of cuts, chemical splash, dirt, and light abrasion. Sleeves start at the wrist and move up the arm and are often worn to extend glove coverage. They are worn by metalworkers, lab technicians, warehouse workers, food processing workers, and workers encountering high heat. Aluminized sleeves have a coating that reflects heat away from workers when working in foundries and near high-heat furnaces or molten metal. Electrical-insulating sleeves are worn with compatible electrical-insulating gloves to protect workers from arc-flash and burns when workers are near electrical hazards.