Bikini briefs by Free Society, Stretch swim fabric, Low-rise waist, Brief cut, Hand wash, 80% Polyamide, 20% Elastane, Our model wears a UK 8/EU 36/US 4, Exclusive to ASOS. Southern California-based swim brand Free Society makes a splash with its bold, no-holds-barred designs and contemporary silhouettes. Rule the pool in its scuba swimsuits, floral prints and tie-waist bikinis.