MAISON MARGIELA Tabi City Loafer Mule $1,690.00 Calf Leather. Select Size: 37 38 39 40 41 Select Option 37 38 39 40 41 Add to Cart Description Mules that reinterpret a classic penny loafer as a slip-on silhouette. The Tabi split-toe is inspired by the traditional 15th century Japanese sock bearing the same name and was launched for the Maison's debut collection in 1989.