- 24Ss Shoes Miu Mi* Coin Thick-soled Loafers In the 1950s, loafers were worn with uniforms and became popular on American campuses. In order to protest against the uniform regulations on campus, students inserted a coin into the groove of the leather strap of the shoe. , and later evolved into "penny loafers". This timeless shoe is synonymous with tradition. Miu Mi* adopts bold designs in the new season series to express a unique and avant-garde concept. Upper: open edge beaded cowhide leather lining : Sheepskin lining sole: original rubber sole Code number: 35-39 (40 customized, non-refundable),