Size Chart

The Speedo Core Endurance+ Jammer is the perfect swimwear for competitive swimmers seeking top-tier performance. Constructed with Speedo's highly durable Endurance+ fabric, this jammer offers exceptional longevity and comfort, ideal for intensive training and competition. Its streamlined design reduces water drag while providing a secure and comfortable fit. Step into the water with confidence, knowing you have the best in durability and hydrodynamics with the Core Endurance+ Jammer by Speedo. Choose from a variety of stylish options to suit your preferences and elevate your swim performance.