For sale are Mammut trekking boots made with Goretex and Vibram, size 37-37.5. They may be tight for size 38. The boots are grey and suitable for autumn-winter season. They are very comfortable, technical, and durable, waterproof, and have been tested in winter hikes in the Carpathians. The condition is very good. Original, purchased from an official store in Poland. Please feel free to ask any questions.