People in Antarctica wear different types of clothing depending on the situation, season and what activities they are doing. It is normal to wear long woolen underwear, pants, a shirt and a windproof outer layer when working on the ice during the summer months.
Much of a person's time in Antarctica is spent inside well-heated buildings on the various research stations, meaning they can wear normal clothing, such as a T-shirt and jeans. However, extra precautions must be taken when going outside in the winter due to the extreme temperatures. Winter expeditions require a person to wear many layers of clothing, covered up by a quilted suit. In fact, wearing multiple layers is always recommended, as it is important to be able to remove layers to prevent overheating and sweating.
There is no permanent population of Antarctica, but there are many permanently staffed research stations located on the continent. These stations are run by a number of different countries and staffed by scientists and support personnel from all around the world. There are an average of 5,000 people living in these stations during the summer months, but this number shrinks to around 1,000 during the winter. Although the stations are permanently staffed, most people only spend one year there before going back to their home country.