Equipped like the Pros! Pro-level performance for competitive swimmers. The arena Powerskin Impulso Swim Racing Jammer for boys offers moderate compression for great muscle support, an improved hydrodynamic position in the water and reduced drag. This technical suit is approved by World Aquatics. Cut from a lightweight and durable compressive woven fabric. A hydrophobic treatment ensures low water absorption and reduces the drag for high-class hydrodynamics. Be ready for the race in a short time! The comfortable stretch fabric allows easy and quick on-and-off. Strategically placed flatlock seams provide great comfort and improved freedom of movement. The Powerskin Impulso race suit is compliant for age 12 & under racing if competing at Jr Nationals, US Open, National Championships, or Olympic Trials. For all other meets, the Powerskin Impulso is NOT USA Swimming 12 & under approved due to its lightweight woven fabric construction.