A PRPS customer service representative said the muddy coating is designed not to wash out if the care instructions -- "machine wash cold, line dry" -- are followed properly.
The jeans have drawn criticism on social media as well as on Nordstrom's website.
"This is a joke, right?" a since-deleted comment on Nordstrom's site reads. "Do you also sell jeans covered in cow manure?"
"Faded jeans with holes in them used to sound like the dumbest idea of all time, so fake mud jeans will probably make billions," Twitter user @RealMikeWelch wrote.
Nordstrom previously raised the Internet's eyebrows with "Clear Knee Mom Jeans," female-oriented pants with clear plastic windows in the knee area.
The mom jeans apparently inspired another retailer, Topshop, to market a pair of completely transparent plastic jeans.