Cleanroom work clothes are dedicated work clothing that are worn in a cleanroom, which is a clean place, to maintain cleanliness without polluting the environment. They are often used in semiconductor, precision equipment, food manufacturing plants, etc. and also called dust-free and dust-proof clothing. The types of the clothes are broadly divided into 2 types: separate types and coverall types. At high levels of cleanliness, wear a highly dust-proof coverall type. In addition, the coverall types include an integrated mask and hood type, an integrated hood type, a separated hood type, and a no hood type. Many of them are made of polyester that is anti-static treated by incorporating super conductive threads to prevent dirt and dust from being absorbed by static electricity. It is necessary to select an appropriate product from multiple types, designs, and materials according to details of work and the cleanliness level.