Performance, style and sustainability - all in one! Discover these extremely durable, chlorine-proof and stylish men's Ribbed Swim Briefs from the arena Performance line. They are ideal for both competitive and regular swimmers who swim frequently in the pool. The highly chlorine-resistant MaxLife Eco fabric with integrated UPF 50+ UV protection is extremely quick-drying and long-lasting. This eco-friendly evolution of arena's MaxLife fabric contains at least 50% recycled polyester from PET bottles. The adjustable internal drawstring ensures an excellent fit. Equipped with a soft and comfortable front lining. Side length: 2.8 inches. This swimsuit is NCAA and NFHS compliant. The OEKO-TEX® STANDARD 100 certification of the fabric means that it has been tested for harmful substances, ensuring it is harmless to human health and the environment.