Enjoy your training in style! arena's durable and chlorine-proof Ribbed Swim Jammers for men from the arena Performance line 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 version of arena's MaxLife fabric contains at least 50% recycled polyester from PET bottles. Equipped with a comfortable front lining. The adjustable internal drawstring ensures an excellent fit. Side length: 17.7 inches. NCAA and NFHS compliant. The Global Recycle Standard is an international, voluntary, third party verified environmental standard which proves the recycled content of the material, its chain of custody and the compliance with social and environmental practices in the production chain.