Red Wing 9106D US4 Irish Setter 6-inch Classic Moc Toe Listed as 23cm because it fits like a 23.0cm to 23.5cm. The Red Wing 9106 uses the same 23 last as the Irish Setter #875 and features a copper rough & tough leather upper. It has a deeper reddish-brown color than the more common Oro Russet leather in Japan, and is characterized by its high oil content and soft feel. - Color: Brown - Material: Leather - Style: Work Boots Color...Brown系 (Brown) Material...Genuine Leather Stains, tears, odors, etc...None