The Speed Force really isn't that warm.
You would think an aura of infinite, other-dimensional speed energy might be hot to the touch, but it's surprisingly temperate. This is my clever way of stating the following fact:
When it's cold, you eed to dress accordingly. As a Speed Force-infused speedster, we recommend you stay warm -- and on brand -- with our red Flash Hoodie.
With a comfortable draw-string hood and deep, spacious pockets, this Flash hoodie supplements the unusually cool Speed Force membrane that protects one from intense friction and nuclear emissions, but not from plummeting mercury.