KEEN work boots, made in the USA, are waterproof and durable. The toe features a carbon fiber core, making it lightweight and sturdy. Size: US 8.5 / UK 7.5 / EU 41 / CM 26.5 I used these boots about three times after purchasing them, but they were too big for me, so I'm selling them. There are two types of 26.5cm models, a standard width and a wide 3E model. This is the standard width model, but I think it's wide enough for most people unless they have extremely wide feet. My foot size, measured with the scale in the last photo, is 25cm long and 10cm wide, so I think even those who usually wear 27cm shoes should be fine. The boots themselves are very well-made, and I plan to buy a smaller size model again. I've only worn them three times and washed them once.