Essential Endurance Jammer This timeless, simple design is great for training and fitness. They comfortably hug the contours of your body to create a smooth, hydrodynamic shape in the water. Made from Endurance+ fabric, which is 100% chlorine resistant and designed to last for longer. Features & Benefits Fabric Composition : 53% Polyeste /47% PBT100% Chlorine resistant - for long lasting performanceQuick dry- dries faster after your swim workoutSun protection - UPF 50+Integral support for enhanced comfortDrawstring Waist - For enhanced fit and security