trampoline

Apparatus made up of a bed stretched by springs; the gymnasts perform acrobatics by jumping and bouncing on it.

safety pad

Cushioned mat covering the frame to prevent injuries to the gymnast.

bed

Canvas that is usually made of nylon; the gymnast bounces and performs acrobatic freestyle on it.

frame

Metal body supporting the bed by means of springs; for competitions, the frame is 3.7 ft above the floor.

spring

Metal elastic coils that stretch the bed; a trampoline usually has 120 springs.

leg

Metal structure supporting the trampoline frame.