A foil is one of the three weapons used in the sport of fencing, all of which are metal. It is flexible, rectangular in cross section, and weighs under a pound. As with the épée, points are only scored by contact with the tip, which in electrically scored tournaments is capped with a spring-loaded button to signal a touch. A foil fencer's uniform features the lamé, a vest, electrically wired to record hits in such cases. It is the most commonly used weapon in competition.