Skater's milieu is a term used to describe the environment in which a skater performs. It consists of a RINK, which is an enclosed area of ICE, and ICE, which is the frozen surface on which the skater moves. The RINK is usually surrounded by walls or boards to contain the ICE and provide a safe space for the skater to practice their skills. The ICE is usually made of a special type of plastic that is designed to be slippery and provide a smooth surface for the skater to move on.