These biker boots by ASOS Collection have been crafted with a smooth leather upper. The details include: pull tab to the reverse, two pin buckle straps with gold-tone stud embellishment, lace-up closure, an almond shaped toe, slim sole and a low heel. ABOUT ME Upper: 100% Real leather, Lining sock: 50% Textile, 50% Real leather, Sole: 100% Other materials.