Billabong Coral snapback baseball hat. Soft canvas Billabong hat with a curved brim and artwork from the Billabong X Coral Gardeners collection at the front. Adjustable snapback. 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.