Because the clean room is such a controlled environment, you are not allowed any moisture or contamination, so I wear a clean room suit. Everything is covered and only your eyes show. You have to go through an air shower once you have been gowned, and you spend the duration of your shift in the full kit. You can wear ear defenders if you want to, but the noise is under the legal limit, so you don’t have to.
The company I work for makes electric batteries for companies like Nissan. I work in the clean room where the cell (the part which supplies electrical current) is manufactured for the Nissan Leaf electric car. I look after the whole process, so if there are any breakdowns on the production line, any plant maintenance or any engineering requests if something isn’t coming out correctly, I am one of the team that sorts it out.