It"s time to hit the ground racing! With Hot Wheels® Ballistiks, kids can challenge, transform and win. Ballistiks balls open on impact to become a vehicle; simply roll up the sides to return to ball form and slip it into a pocket for easy portability. Transform from a swiftly rolling ball to a fast-moving vehicle and back again, and with more than 24 different characters, kids will want to collect them all! Not for use with some Hot Wheels® sets.