The upper leather is
box-cattle ox (thickness 1.5-1.8 mm), the lining is also oxhide
(thickness: 1.2-1.4 mm). The sole is rawhide-cruppon (thickness:
5.2-5.7 mm), that made with sticking and wood-nailing. The heel is neck
of ox (thickness: 3.5-4 mm), which made of layers. The stiffener,
side-, and toe-brace are also made of real leather.