The extremely durable, chlorine-proof and eye-catching arena Kikko Pro Swim Briefs for men from arena's Performance line are ideal for both competitive and regular swimmers who swim frequently in the pool. They are designed with a new interpretation of arena's diamonds. The highly chlorine-resistant MaxLife Eco fabric with integrated UPF 50+ UV protection is extremely quick-drying and long-lasting. This eco-friendly version of arena's MaxLife fabric contains at least 50% recycled polyester from PET bottles. Equipped with soft front lining for comfortable coverage and an adjustable internal drawstring for an excellent fit. Side length: 2.75 inches.