Totally encapsulating positive pressure protective suits. This suits will be worn by scientists who work in the lab. In Level 4 labs, they work e.g. with deadly viruses. The suit is made of very thick, flexible plastic that won’t tear or rip, and it is very heavy – with the air hose and regulator attached.
Image are from bio safety level 4 laboratory - S.W. Foundation for Biomedical Research - San Antonio, Texas