Speedo Women's UPF 50+ Long Sleeve Rashguard 51% PBT/ 49% Polyester. Imported Built with Endurance Lite fabric that has all the performance properties of our Endurance+ fabric in a 10% lighter weight that won't weigh you down in the water. 100% chlorine resistant and lasts 20 times longer than regular spandex UV Block the Burn protective fabric features more body coverage for greater sun protection Fabric: 51% PBT/ 49% Polyester. Lightweight and quick drying