Slipper

A slipper is a shoe that is worn on the foot when a person is preparing to go to sleep or has been awakened from their sleep to get something.

In the EMPATH: The Luckiest Smurf story series, the Smurfs mostly wear slippers during the cold seasons when they need to go outside their houses in their nightgowns. Cobbler Smurf is the one who makes slippers for his fellow Smurfs.