Introducing Billabong Sandals DUNES IMPACT: the most stylish and comfortable sandals to hit the beach this summer. With their unique design, these sandals provide optimal support and comfort, while also helping to protect the environment by using recycled materials and helping to reduce beach erosion. Whether you re looking for a casual sandal to wear around town or a more rugged option to wear while exploring the outdoors, Billabong Sandals DUNES IMPACT have you covered.