Blundstone Men's 1430-M 100% Leather Imported Synthetic sole Shaft measures approximately 5" from arch Heel measures approximately 1.5" Platform measures approximately 0.75 inches Boot opening measures approximately 9.5" around Removable anatomically designed footbed and an extra set of footbeds for fit adjustment Extra set of footbeds for fit adjustment Poron in heel strike zone for superior shock absorption Australian premium weather resistant leather New thermoplastic polyurethane outsole/polyurethane midsole for longer wear and comfort