These are the $16 DC Comics Batman Batmobile Slippers available from Hot Topic. They look like the Batmobile from the 1989 Batman movie. But for your feet. You know what would make them even cooler? If the wheels were actual rollerskate wheels. Still, I give them 4 out of 5 Bat-Signals and will be wearing them to every casual Friday from now until I'm fired, which, oh shit, what's this pink slip on my desk?! *reading* Whew, just a promo flyer for lady's night at the strip club.
Thanks to Kendall, who agrees the coolest slippers aren't slippers at all, they're aqua socks.