Thank you for viewing. These are Danner bean boot-style work boots made with Thinsulate material. * Brand: Danner * Size: US size 6 (Japanese size 24cm) These boots use Thinsulate, a high-performance insulation material. (Thin + Insulate) It has a higher body heat reflection efficiency than regular insulation, and is characterized by being lightweight and less prone to trapping moisture (and thus less likely to lose warmth when wet). They kept me warm even in the winter in Iwate. I've only worn them about 10 times. I mainly wore them on sunny days or snowy days, so there is almost no visible dirt on the outside. There are no tears or odors. The soles have some wear on the heels.