Riot Swim Toka Bikini Bottom in Black. - size L (also in S, M) Riot Swim Toka Bikini Bottom in Black. - size L (also in S, M) 87% nylon 13% spandex. Made in China. Hand wash. Ruched waist. Back cut-out detail. Thong back. Item not sold as a set. RIOR-WX66. TKA-B-BLK. For swimwear that's equal parts sexy and flattering, Riot Swim is about to be your favorite brand. Black-owned and founded in 2016 by model Monti Landers, the swimsuits range from high-waisted bikinis to ruched one-pieces that will make you feel confident. The bestseller, the Echo, gives you legs for days, perfect cleavage, and it doubles as a bodysuit.