Keen's Uneek Men's Sandal is a technical shoe with a twist. The upper is made entirely of two polyester cords, woven together in such a way that they conform to your foot as you move, which provides surprising support in a lightweight, breathable, and comfortable package. A drawstring closes the cords snugly around your foot, and the microfiber footbed and supportive sole work together to keep you comfortable and upright on short hikes, tropical explorations, and casual summer days.