Space is filled with dangerous radiations. It has no air to breath and is extremely cold. The astronaut needs protection to survive and work in space.
So, the astronauts wear spacesuits whenever they are exposed to the harsh environment of outer space. The first spacesuit was the Soviet Union SK-1 suit which was worn by Yuri Gargarin in 1961.
A spacesuit is like a one-person spacecraft. Spacesuits supply the astronauts with oxygen to breathe and protect them from extreme temperatures. They guard the astronauts from being injured from small fragments of space dust.
The official name of the spacesuit is the "Extravehicular Mobility Unit or EMU".Previously, all spacesuits were one-time garments.But now the spacesuit engineers have developed reusable EMU. The cost of a spacesuit is about $11 million.

Santa Claus is the mythical figure. He is portrayed as a fat, jolly man with a white beard, dressed in a red suit outlined in white and the fur boots. Santa is also known by names such as Father Christmas or Saint Nicholas. He was born in the 4th century in Lycia, Anatolia. It is believed that Santa lives at the North Pole with his wife Mrs. Clause, a crew of industrious elves, and a stable of magical, flying reindeer. These elves make toys. On 24^th December, Santa is said to drive a sleigh full of toys drawn through the air by nine reindeer namely Blitzen, Comet, Cupid, Dancer, Dasher, Donder, Prancer, Vixen and Rudolph. Rudolph, the ninth reindeer is with a shiny nose. Throughout the year elves makes toys and on the night of December 24 i.e. on Christmas Eve, Santa enters houses of good children through the chimney to deliver gifts under the Christmas tree and in the stockings.