Speedo Men's Endurance Lite Color Block Brief Swimsuit 51% Other Fibers, 49% Polyester Imported 10 percent lighter weight fabric than Speedo endurance+ fabric that won't weigh you down in the water Resists sagging, bagging, and fading 51 percent PBT/49 percent polyester All the long lasting performance qualities of our Endurance+ fabric in a 10 percent lighter weight perfect for lap swimming and training Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Perfect practice suit for the frequent swimmer Traditional performance brief with 3 inch side panel and inner drawstring waist Made by speedo, the world's no 1 swim brand