From July 24 through July 27, any fan showing love for a DC superhero can get a free limited-edition Superman, Batman or Wonder Woman doughnut with any purchase. Those repping fandoms via donning costumes or T-shirts, sporting tattoos or even uttering superhero catchphrases are good.

Krispy Kreme and Crocs are teaming up to introduce a doughnut-inspired pair of shoes. The owners of that footwear will get a free doughnut on Aug. 9.

There is also a way to get a free doughnut from Krispy Kreme if you simply show up wearing Crocs. Here's what to know.