Field hockey is a widely played team sport of the hockey family. The game can be played on grass, watered turf, artificial turf or synthetic field, as well as an indoor boarded surface. Each team plays with ten field players and a goalie. Players commonly use sticks made out of wood, carbon fibre, fibre glass or a combination of carbon fibre and fibre glass in different quantities (with the higher carbon fibre stick being more expensive and less likely to break) to hit a round, hard, plastic ball. The length of the stick is based on the player's individual height, the top of the stick usually comes to the players hip, taller players typically have taller sticks. The sticks have a round side and a flat side only the flat face of the stick is allowed to be used, if the other side is used it results in a foul. Goalies often have a different kind of stick, however they can also use an ordinary field hockey stick. The specific goal-keeping sticks have another curve at the end of the stick, this is to give them more surface area to save the ball. The uniform consists of shin guards, shoes, shorts or a skirt, a mouth guard and a jersey.