White Super Power Name Of A 70's Or 80's Movie Kids Put On A White Tshirt With A Lion Head On It, Gave Them Super Powers?

Name of a 70's or 80's movie kids put on a white tshirt with a lion head on it, gave them super powers? - white super power

I do not know much about this film, but I remember these kids had these T-shirts with the head of a lion running at him and when he comes in he can be very fast. It must have been about 70 or 80 at the beginning of the film. Some people were stealing the shirt to be. I want to understand, speak what you'll see the.