Tap into the Negative Speed Force with the 100% cotton Reverse Flash T-Shirt! Unfortunately it won't fit into a costume ring nor will it allow you to control the flow of time around you; it'll just show off your love for the Reverse-Flash or one of the Zooms! Hey don't ask me...DC Comics' Fastest Man Alive has a tendency to create a fair amount of temporal paradoxes. Yellow with a black and red symbol the Reverse Flash T-Shirt may be from the 25th Century.