Mephisto | Shoes | Mephisto Slacker Goretex Leather Boots 。The Mephisto Darwin Riko Chukka Boots in Men\'s Size 11 are a stylish and comfortable option for the winter and fall seasons. Made with brown leather and featuring a round toe shape, these boots offer a solid pattern with a cushioned and comfortable design. The Air-Jet technology by Mephisto provides added comfort and support, making them a practical choice for everyday wear. The leather lining and insole, along with the rubber outsole, ensure durability and quality in this classic Chukka style boot.