These are brand new, never worn outside of the house, Danner boots. US size 10 (could fit 10.5 or narrow size 11, based on my personal shoe size/experience), EU size 41.5 Here is the description from their site: The original Danner Jag debuted in the '80's as a lightweight alternative to our classic, heavy-duty hiking boots. After a few years on the trail supporting external frame backpacks and complementing denim cut-offs, the Jag was retired. Now 30 years later, we've re-introduced the Jag as a more versatile version of its former self. It’s comfortable both on the trail and around town, and incorporates durable, lightweight materials, a cushioning EVA midsole, and a new waffle outsole that adapts to a wide variety of terrain. We're proud to re-introduce this Danner original. See photos for further details about the shoes