It's small green pieces of paper!
Check out more in the lives of Superheroes!
The awesome company behind this is Squeegee Cleaning Services of Chelsea, AL. Employees from the Alabama company dressed up as Superman, Batman, Spiderman, Captain America, and dropped by to "hang out" with the kids during the work day. Superman can fly, but hey, we all need a day to relax every now and then, right?
Check out more costumes and all other Halloween-related awesomeness here!