ATTACHMENT Engineer Boots - Color: Black - Style: Engineer Boots - Material: Leather, brown core - Sole: Rubber sole Outsole: 31cm I haven't worn them much, so the shaft stands up firmly on its own. The soles have some mud on them from walking in muddy areas, but they can be cleaned. There is not much wear on the soles. There is no size indicated. I wear Birkenstock size 41, and other shoes size 26cm-26.5cm, but these boots fit perfectly.