The Endurance+ Medalist Junior suit is engineered with Speedo's new chlorine resistant, speed-drying Endurance+ fabrication. Endurance+ contains no Elastane, as a result no degradation can take place. Degradation leads to major damage to the fabric structure due to a major breakdown of the constituent yarn. The lack of elastane ensures the garments chlorine resistance, making it a durable training suit. Improved elasticity and colour durability of the fabric offers 20 times more colour resistance than conventional elastane swimwear. The Endurance+, due to its low water absorbing properties, dries fast, remains 100% chlorine and snag resistant whilst offering superior shape retention. The Ultimate in durability. Manufactured from 50 % Polyester - a synthetic fibre with soft hand feel, good drape and strength properties as well as resistance to wrinkling and shrinkage, and 50% Polybutylene Terephthalate. The Classic Medalist back aids shoulder movement and flexibility making it ideal for training purposes.