Theses Oofos Oolala look like black patent. They are a ladies size US 8, EU 39 and in excellent condition. Make the most out of every day in the OOFOS Oolala flip flops. Revolutionary OOfoam ™M technology absorbs 37% more impact than tradition foam to reduce stress on feet, knees, and joints. These dreamy-soft sandals are designed with strategic arch support and a diamond-grid footbed pattern to promote natural motion.