Hazmat suit

Such suits are often combined with self-contained breathing apparatus (SCBA) to ensure a supply of breathable air.

[2][3] The United States Department of Homeland Security defines a hazmat suit as "an overall garment worn to protect people from hazardous materials or substances, including chemicals, biological agents, or radioactive materials.

Level A (United States) suits, for example, are limited by their air supply to around 15–20 minutes of very strenuous work (such as a firefighting rescue in a building).

[7] Most suits used in Europe are covered by a set EU Norms, and divided into a total of six types (levels) of protection: 1: Can be used in places where the chemical in gaseous form isn't harmful to the body exterior.

The regiments were deployed during the FIFA 2014 World Cup, 2016 Summer Olympics in Rio de Janeiro, and the COVID-19 pandemic.

The splash protection suits are designed to prevent the wearer from coming into contact with a liquid.

The release valve does retain some air to keep some positive pressure ("overpressure") inside the suit.

Lesser protection (level C in the US) suits may be coveralls of treated material, or multi-piece combinations, sealed with tape.

Decontamination personnel wearing hazmat suits during a mock nuclear attack in 2009.
Plague doctor wearing a plague doctor costume
A radiographer wearing an early hazmat suit in 1918 during World War I .
Tokyo Metropolitan Police Department officers wearing hazmat suits.
United States Air Force firefighters wearing hazmat suits with an outer aluminized shell during an emergency management exercise.
Different levels of hazmat suits used by the Brazilian Armed Forces .
NASA technicians in SCAPE suits prepare to fuel a spacecraft.
Tyvek coveralls.