Performance compression swimwear. The striking Pro Printed Jammer features performance technologies designed to help you accomplish more in training. Targeted quadricep compression achieved through internal powermesh panels and a glute support seam help to promotes increased kick power through reduced muscle oscillation. The jammer has a V-cut construction for added comfort and security, and a drawstring waist for enhanced fit and security. Made from our quick-drying, 100% chlorine-resistant Endurance+ fabric, the Pro Printed Jammer offers outstanding durability, no matter how often you swim.