Field hockey goals are made of two upright posts, joined at the top by a horizontal crossbar, with a net positioned to catch the ball when it passes through the goalposts. The goalposts and crossbar must be white and rectangular in shape, and should be 2 in (51 mm) wide and 2–3 in (51–76 mm) deep. Field hockey goals also include sideboards and a backboard, which stand 50 cm (20 in) from the ground.