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1982 Super Powers Batman (& Robin) punch Bop Bag. This Bop Bag still holds air! I blew it up and 45 minutes later (as I type this), it's still inflated. If it does have a leak, it's very small and slow. Dated 1982. Batman is printed in the front outside and Robin (The Boy Wonder) is printed on the back inside so that when inflated, it gives a 3D effect. The inside of the bop bag is a little cloudy with age. It might be able to be cleaned by squirting some water inside, then draining, but I'll leave that up to the new owner.