A sledge is a vehicle for traveling over snow or ice, consisting of a carriage set atop runners; it’s also called a “sleigh” in modern America. It’s a period charge, found in the canting arms (German Schlitten) of von Schlitsted, 1605 [Siebmacher 170]. The sledge faces to dexter by default.
Else vom Schnee bears: Azure, a sledge argent.