NHL players are serious about their profession, but sometimes you're reminded that they can be little kids at heart.

Friday, footage emerged of Sabres centre Ryan O'Reilly signing autographs for a few fans after practice at the Harbor Center in Buffalo. As nice as the gesture of signing autographs was, what really caught our eye in the 17-second video was O'Reilly casually skating into an elevator on pair of roller skate blades.

If you've spend a fair amount of time at your local rink, you likely recognize the roller skate guards, as they're pretty popular amongst youth hockey players. But now you know that they may just become popular amongst NHL players!

(H/T: Twitter/Matthew Bove