Speedo Men's Endurance Lite Kinetic Zag Brief Swimsuit 51% PBT/49% Polyester Imported 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 number 1 swim brand