Pop into a wunderbar active-play experience with FÃ¼ndapop! The Velcro-like straps tighten snuggly around your fingers and your thumb to create a smooth connection between the opening and closing of your hand to the opening and closing of the FÃ¼ndapop flaps. Just place one of the 4 included balls inside your FÃ¼ndapop's nylon launch pad and then, with a smooth and easy snap, simply open the flaps. WOOSH! Instantly the nylon fabric catapults the ball over 20 feet through the air, headed straight for your fellow FÃ¼ndapopper! With another simple snap, the ball is caught. Just like that â€“ Limitless outdoor fun has begun! Kids can't wait to get outside and get active once they witness the fascinating action of the FÃ¼ndapop by Marbles the Brain Store.