The Z-Trek sandals follow the classic Xero style with an extremely flexible and virtually unpadded sole structure, allowing your feet to work naturally. The sole is also flat, a so-called "zero-drop" sole, meaning the heel and ball of the foot are at the same height. The minimalistic Z-Treks are also easy to slip into a backpack or suitcase when needed, as they take up very little space. - Slightly wide fit - Straps are made from recycled water bottles - 6 mm thick FeelTrue sole structure - Made from materials that absorb very little water and do not contain leather Start using barefoot shoes in small doses and gradually increase the wear time as your feet adjust to the new challenge.