The Chiruca Sumatra GORE-TEX hiking boots are designed for outdoor activities on all kinds of terrain and in all kinds of weather conditions. They offer durable water-resistance and high breathability for the entire foot, thanks to GORE-TEX technology. The Vibram Octopus Supra outsole, together with the expanded Phylon midsole guarantees impact absorption and grip.Features:- Synthetic material combined with mesh- GORE-TEX Extended Comfort lining- Expanded Phylon midsole- Vibram Octopus Supra outsole- Weight: 360gTechnology:- GORE-TEXGarments made with GORE-TEX deliver maximum comfort and protection for a wide range of activities and weather conditions. The GORE-TEX membrane is water and wind resistant, ensuring no water gets in while allowing your feet to breathe. How is this achieved? Its pores are 20,000 times smaller than raindrops, but 700 times larger than water vapour molecules. This means, water cannot get in but perspiration can get out and the skin can breathe.