Mad Rock - Mugen (Grey/Red) - Men's: The Mugen is the perfect combination of performance, fit, and durability with a new, dynamic design. 2.0mm TekFlex synthetic upper and lining gives the shoe a trusted feel and fit on your foot. Mad Rubber toe patch for protection. Dual density outsole and tenacious Hooker heel are designed to perform on trad, sport, gym, and bouldering. 5.3mm outsole with Mad Rubber Formula #5. 3-D molded Hooker heel cup with descent tread and comprised of Mad Rubber Formula #3. 1mm compressed fiber midsole. Double stitched and seamless binding construction. Synthetic padded tongue keeps you well secured and cool all day. Dual external directional pull tabs. Dual TPR rubber coated Powerlock closure straps. Vegan friendly.