Nubuck leather mid-calf heeled boot. Inner ankle zipper, 4.5" heel with 1" platform. Please note: these run small! We advise following this chart (the shoes have European sizing): 37= 6US, 38=7US, 39=8US, 40=9US, 41=10US This is what nubuck means: Nubuck is top-grain cattle leather that has been sanded or buffed on the grain side, or outside, to give a slight nap of short protein fibers, producing a velvet-like surface.