These breathable shoes are made from a combination of polyester and cotton, and lined with Tibetan yak leather for extra durability and softness. Strong EVA midsoles and Vibram soles are layered to last through all kinds of terrain. A Greenland wax finish makes the shoes, water repellent. Lace up for fit and comfort. Size EU 40 which corresponds to a US women’s 8 1/2. Even though the tag says EU 40 and US 7 1/2 that is incorrect. I wear an 8 1/2 and they fit me perfectly.Excellent preowned condition