MaterialsUpper: LeatherLining: LeatherSole : RubberOslo Black Leather Chelsea Men Boot: A Fusion of Craftsmanship and Distinctive StyleExemplary Craftsmanship: Immerse yourself in the epitome of craftsmanship with the Oslo Black Leather Chelsea Men Boot. Meticulously handcrafted from 100% premium calf leather, these boots are a testament to superior artistry and attention to detail.Warm Interior Comfort: Embrace the changing seasons with warmth and comfort. The interior of the Oslo boot is lined with a cozy material, ensuring a pleasant exper