Bounce Xtension features proprietary rubber super bounce balls Includes adjustable padded foot-straps. 360° rim lock collars R Exclusive, only available at Toys R Us Canada. MorfBoard Bounce Xtension lets you strap in and grab some air with two super bounce balls. Strap into the padded adjustable foot straps and practice your skills indoors and outdoors. Crank down the padded, adjustable foot straps to bounce, spin, and grab. Stomp your 360s and 540s. Work on new airs and bounce your way to the next level - indoors and out.