Made of leather, they have finishes in shades of mustard, black, and olive green. They are really an easy way to add color in your daily life. Upper: 100% Leather - Lining: 100% Synthetics - Insole: 100% Leather - Sole: Rubber - Heel: 4 cm - Two-tone leather inserts - Designer material: Vel + Vel + Vel + Sef + Sole