These heat reflective 300 and 305 Series Approach Suits are designed for personnel engaged in maintenance, repair and operational tasks in areas of low ambient, high radiant heat, much the same as our 500/505 Series. However, the 300 and 305 Series Approach Suits have no moisture/steam barrier, making these garments suitable for situations where exposure to hot liquids, steam or hot vapor is not a possibility. 300 and 305 Series Approach Suits are used by power plants, cement manufacturers, foundries, ceramic, glass, and plastic manufacturers, chemical processing. Suits protect employees exposed to extreme radiant heat for relatively prolonged periods of time.