Cleanroom garments can be made of woven, knit or non-woven material and the kind of material makes a big difference in filtering out particulates and contaminants from your cleanroom’s controlled environment.
Sterile garments can be free from contaminants, but not particulates. They can still introduce particles into your cleanroom, although they would likely be sterile particles. Clean and sterile garments, on the other hand, have been cleaned for particulate removal as well as sterilized. These are often called “lint-free.”