Two astronauts check mobility of different types of Apollo space suits
Two astronauts check mobility of two different types of Apollo space suits. Astronaut James B. Irwin (on left) wears the original Block II Apollo pressure suit which the Apollo 204 Review Board recommended by changed. Astronaut John S. Bull (on right) wears the new Apollo pressure suit which incorporates changes recommended by the board. The new suit worn by Bull has an outer layer of Beta Fabric, a non-flammable fiber glass cloth.