These trekking boots are designed for hikers in the mountains, featuring a multicolor design. Size 38. Made with Gore-Tex, a membrane fabric that protects against water and wind while allowing sweat to evaporate, ensuring comfort and dryness during activities. The membrane consists of Teflon (ePTFE) with billions of microscopic pores that are smaller than a raindrop but larger than sweat vapor molecules. Key properties include waterproofing, breathability, and wind resistance, making them ideal for outdoor activities. Please feel free to ask any questions.