Billabong X It's Now Cool bikini top. This style is crafted partially out of recycled materials and is designed in a classic triangle silhouette with adjustable ties at the back. Finished with a subtle gradient design. at the triangle cups. An icon in the surf industry for decades, Australian brand Billabong got its start when founder Gordon Merchant started producing board shorts by hand in 1973. Now, they maintain a prominent presence among surfers, while also creating swimwear that looks just as good lounging on the beach as it does riding the waves.