The Dane shoe features a lightly milled and smooth leather upper. It also has strobel construction, leather linings, a bio comfort sock liner, and a leather sole. The Bio Comfort sock liner system is designed to reduce foot fatigue and discomfort through the performance of a unique combination of high-tech materials. At the core of each Bio Comfort sockliner is recycled poliyou, an anti-bacterial, open cell foam that combines natural bamboo and cork to absorb and wick moisture. This technology provides exceptional breathability as well as superior shock absorption and energy return for the life of the shoe.