Typically castellers wear white trousers, a black sash, a bandana and a coloured shirt often bearing the team's emblem. A differently coloured shirt indicates which team a participatant is in. Team Castellers de Barcelona wear red shirts while Castellers de Vilafranca wear green shirts. The sash is the most important part of their outfit, since it supports the lower back and is used by other castellers in the team as a foothold or handhold when climbing up the tower. This piece of cloth varies in length and width and depends on the casteller's position inside the tower and also on choice. Length range from 1.5 to 8 m, and usually is shorter for those higher up in the castell. Performing castellers usually go barefoot as to minimise injures upon each other as they climb to their position and also for sensitivity when balancing and to have better feel and hold each other.