The sole has been replaced once by another company. I was wearing them with insoles! *After washing thoroughly with OxiClean, oil-up maintenance has been performed. The Red Wing Irish Setter 1907 (6-inch Classic Moc) is a modern classic work boot based on the model released to commemorate the brand's 100th anniversary (2005). Unlike other Irish Setters (such as the 875), it has the following special specifications. Main Features: Dedicated Last (No. 45) and Insole: Uses a dedicated "No. 45 last" designed with the insertion of a footbed (insole) in mind. A removable leather footbed is included as standard, allowing for adjustment of the fit. Copper Rough & Tough Leather: Uses nubuck leather that has been slightly brushed on the grain side (surface of the leather) and treated with oil and wax. It has a unique unevenness and wrinkling that looks like it has been worn from new, allowing you to enjoy the aging process early on. Storm Welt (Norwegian construction style): The voluminous welt with a raised edge enhances water resistance and creates a powerful silhouette.