Women's breathable versatile sandal. Geox's Kolleen is a remarkably comfortable sandal with a versatile design that will prove perfect for the warm weather. The upper has been crafted from red nubuck and features an adjustable ankle strap. Cushioning and light with a footbed in shape-memory foam, the outsole pampers the foot and makes for effortless walking.The classic Geox rubber sole is based on an exclusive patent. The combination of the perforated sole and the resistant breathable and waterproof membrane allow for natural temperature regulation, creating the perfect microclimate inside the shoe that keeps feet dry and comfortable all day long.