The Speedo Powerflex Eco Solar Swim Briefs Swimsuit in men's US size 34 is a sleek black swimsuit made from a blended fabric of polyester and spandex. It features a solid pattern, drawstring for a secure fit, and is designed for competition and training purposes. The swim briefs are lined with polyester material for added comfort and durability. With the Speedo brand known for quality swimwear, these eco-friendly swim briefs are a stylish and practical choice for any water activities.