arena's durable Marbled Swim Briefs are ideal for regular swimmers. 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, obtained from PET bottles. Furthermore the production process of the fabric was optimized to save energy, reduce CO² emissions and minimize water usage. Equipped with comfortable front lining, the adjustable internal drawstring guarantees an excellent fit. Side length: 7 cm. Every component of the STANDARD 100 by OEKO-TEX® labelled fabric has been tested for harmful substances, ensuring this article is harmless for human health. The test is conducted by our independent OEKO-TEX® partner institutes based on our extensive criteria catalogue.