Purchased new from a Mammut outlet in June 2020. Used for various activities including low-mountain hiking, alpine rock climbing, climbing Mt. Fuji, and multi-day backpacking trips. Used for approximately 30 days total. I've been using these for four years, thinking the size was a bit large, but I've now bought a new pair of the same shoe in a mid-cut version, so I'm selling these. I washed them briefly before listing them. The waterproof function still seems to be working. Please check the images for any scratches or stains. For reference, my bare feet measure 26.0cm (left) and 25.5cm (right), with a D width and Egyptian foot shape. My usual sneaker size is 27-27.5cm. My new Ducan Mid size is 26.5cm, UK8. Mammut Kento Guide size is 27.0cm, UK8.5. NIKE trail running shoes Zegama size is 26.5cm. Sportiva TX2 EU43. Sportiva KUBO EU41 (climbing shoes). https://www.mammut.jp/items/3030-03471 Gender: Men's Shoe Length: High Cut Sole: Stiff Features: Waterproof Features: Waterproof, Breathable