Barry Allen took 60% acrylic, 20% wool, 10% cotton, and 10% polyester into the Speed Force and returned with the Flash Symbol Heather Grey Adjustable Cap 10 years later! Stupid time dilation. If you wear this hat, you may be able to get the Flash to slow down for a little bit. Maybe for just a little bit. With a red bill, a grey heathered body, the classic Flash symbol, and a adjustable closure for snugness makes the Flash Symbol Heather Grey Adjustable Cap perfect for fans of the Speed Force, the Flash, and physics relating to the speed of light!