Mich. Comp. Laws § 750.290
Boots and shoes composed of imitation leather-The term "imitation leather" as used herein shall, for the purposes of this section, be defined to be all leather composed in whole or in part of paper, scraps and portions of hides of animals, used in the manufacture of boots or shoes, which being pressed together with an adhesive substance to keep such component parts intact, is used in place of solid leather in the making of such foot gear.
Every person within this state, who is engaged in the manufacture, sale, exchange, or offers for sale, or has in possession with intent to sell, boots or shoes in the construction of which any imitation leather is used, shall cause to be stamped upon such boots or shoes the words "imitation leather" in a distinct and legible manner: Provided, however, That the letters in the words "imitation leather" shall not be less than 1/8 of an inch in length.
When such imitation leather shall be used either as soles, in-soles, heels or counters of such boots or shoes, the words "imitation leather" shall be stamped upon the outside of the soles near the heel of such boots or shoes; and when such imitation leather shall be used in the making of any other part or parts of such boots or shoes, the words "imitation leather" shall be stamped thereon, in a conspicuous place: Provided, however, Excepting the soles of such boots or shoes the words "imitation leather" need not be stamped upon the outside thereof.
The possession of any boots or shoes which are composed in whole or in part of any imitation leather and which are not stamped as herein required, shall be prima facie evidence of intent to sell the same.
Any person who shall knowingly violate any of the provisions of this section, shall be guilty of a misdemeanor.
MCL 750.290