Swimsuit by Billabong, Colour-block design, Why settle for just one?, Round neck, Zip fastening, Billabong logo print, Racer-cut back for unrestricted movement, Brief-cut to back. In 1973, Billabong founders Gordon and Rena Merchant started crafting and selling board shorts to surf shops on Australias Gold Coast. Thanks to the durable, triple-stitching technique they used, their designs became go-tos for local surfers, and the rest is history. Take a look at our edit of the brands surf, swim and beachwear its swimsuits and bikinis are always board-ready.