Cordobes Engineer Boots Men's 10.5 with c-100 last meaning it does run large, roughly 1/2 -1 size according to reiviews Bought them to use as motorcycle boots but later on got an actual pair that were patted and offer more protection. Only worn a handful of time, didn't see much action Additional information found on manufacturers website: 10" tall shaft Unlined shaft Lined vamp Veg Tan midsole Steel shank