At first glance, the Glenn appear to be regular Oxford-style casual shoes. However, the seemingly thick sole is actually extremely thin - the sole material is simply raised at the edges, creating the impression of a normal sole. Xero's FeelTrue sole is thin, extremely flexible, and provides virtually no shock absorption - thus, it sits at the core of the barefoot shoe phenomenon. The Glenn can be paired equally well with jeans or suit trousers. - Xero last: wide and round at the toe, allowing the foot to spread naturally during the step - Upper material: genuine leather - Drop: 0 mm Those accustomed to regular shoes should start using barefoot shoes in small doses. The foot works in a very different way compared to shoes with shock absorption and often higher heels at the front.