Bikini briefs by O'Neill, Stretch swim fabric, Low rise style, Split sides, Brief cut, Machine wash, 91% Polyamide, 9% Elastane, Our model wears a Small. ABOUT O'NEILL From the coast of Santa Cruz, California, O'Neill founded its roots in surf culture, credited with creating the World's first neoprene wetsuit. Inspired by the freespirited '60s, O'Neill's collection of beach and swimwear sees floral prints and color-blocked stripes adorn form fitting bikinis and mini board shorts.