In an ensemble for a firefighter or for an emergency rescue worker, protective trousers and a protective coat are provided with elastomeric gaskets, such as neoprene gaskets, one of which lines an inside surface of a distal margin of each leg of the protective trousers and is adapted to be snugly stretched around a protective boot, another of which lines an inside surface of a distal margin of each arm of the protective coat and is adapted to be snugly stretched around a protective glove, and another of which lines an inside surface of a lower margin of the protective coat and is adapted to be snugly stretched around the protective trousers. Such gaskets extend from and, preferably, are unitary with liners, such as neoprene liners, which provide moisture and/or chemical barriers. When stretched snugly, such gaskets inhibit ingress of potentially harmful materials, whether gaseous, liquid, or particulate.