Firefighters suits first appeared in the 1930s and were originally made of asbestos fabric. Today they are made from aluminized materials to reflect high heat from fires. A complete suit provides protection for the head, jacket, pants, gloves, and boots. It consists of three layers - an outer flame retardant layer, middle vapor barrier layer, and inner thermal barrier layer. The suit effectively protects the body from flames for at least 28 seconds while allowing mobility for firefighters.