Starting situation. A in front of, and face away from B. B face on to the back of A and close to A. Grip. B grips the fists of A, or the heels of the palms of the hands of A,in a forward undergrasp grip. Base. Legs wide apart sideways, or in a lunge position. Works when gymnast A stands upright in front of, and face away from B, holding tense straight arms squeezed into the sides of the body. Either making a Fist, or flexing at the wrists to point fingers forwards. Gymnast B stands behind A, face on to the back of A, and holding either the fists of , or the palms of the hands of A, in a forward undergrasp grip. Gymnast A executes a vertical jumping action in co-ordination with the lifting action of B. At the top of the lift gymnast A may perform a Shape, (tuck, straddle,pike,) leg design, or maintain a straight shape before being lowered to the ground.