TYR Men's Solid Black Nylon Drawstring Racer Swimwear Briefs in size 30. This swim bottom is designed for competition, training, and recreational use. Made of comfortable Nylon and Spandex material, it features a drawstring for a secure fit. The briefs are lined for added support and come in a classic navy color. The brand is TYR, known for its quality swimwear. Perfect for the beach or pool.