This Victoria's Secret Zuma Itsy Ruched Back Bikini Swim Bottom in polka dot design is a must-have for your beach wardrobe. The size is medium and the color is black and white. The material used for the bottom is 80% nylon & 20% elastine which provides a comfortable fit. The bottom features ruching at the rear giving a flattering look. This bikini bottom is perfect for a day at the beach or by the pool.