Our Best Selling Beach Bangle. Stack your favorite travels and experiences on your wrist. Whether it’s an amazing day on the golf course, swimming at the beach or a record-breaking win at the ballpark, Dune will use sand or earth elements from that moment to capture your memory forever. This wave bangle is approximately 17mm in diameter and filled with your choice of sand or earth elements, layered to a slightly domed, glass-like finish.