ESA astronaut Tim Peake in his Sokol suit he will wear on launch day, 15 December.
Soyuz astronauts get to try their spacecraft and suits for the first time two weeks before being launched to the International Space Station. Each suit and spacecraft seat is tailor-made for comfort and safety.
The suits will protect them in case of a sudden loss of pressure inside the Soyuz.
Tim has a six-month mission planned and are spending their last days on Earth preparing for the flight into space.