The Flash Neon Symbol T-Shirt is made from 100% cotton and that bold symbol is probably a result of excited quantum particles. The Flash can do that kinda thing on account of his mastery over the Speed Force. You should see him do the cleaning around the house or make something to eat! Actually you can see that on the live Justice League show from the mid 90s. Wait never mind! Don't watch that! Just get the Flash Neon Symbol T-Shirt. Everything will be okay.