Roller derby gear includes SKATES, which are a type of shoe with four wheels attached to the bottom. The SKATES are designed to allow the wearer to move quickly and easily on a flat surface. Roller derby is a contact sport that involves two teams of five players skating in the same direction around an oval track. The objective of the game is for each team to score points by having one of their players lap members of the opposing team. Protective gear such as helmets, elbow pads, knee pads, and wrist guards are also worn by roller derby players to protect them from falls and collisions.