Metallic Onyx Crochet Itsy Bitsy Bikini from the 2013 Beauty and The Beach Swimwear Collection. The perfect little black bikini is back and better than ever! Sliding triangle crochet top is made of shimmer viscose yarn and fully lined in a poly/spandex blend fabric in the cups and bottoms. Top ties at neck and back. The matching low rise string tie Brazilian cut bottom offers minimal rear coverage and adjustable hip sides. All crochet swimwear is fully lined in a poly/spandex blend fabric, handmade with highest quality cotton/nylon blend yarns so garment will maintain color and shape when wet. **Please note that Shimmer Swim is not intended for use in heavily chlorinated pools or hot tubs.