This sandal takes its name from its anatomically shaped cork footbed. KOAK is just made for summer. The sandal impresses with its modern cross-band look in savanna . And to ensure that you can enjoy a carefree summer, the chrome-free tanned goat Nappa leather nestles softly and comfortably against your foot. That makes the sandal, which has been awarded the Blue Angel and the Austrian Eco-label for its environmentally friendly and socially mindful production conditions, ideal for summer.