Speedo Color Wave Volt Back 51% Pbt, 49% Polyester Imported All the long lasting performance qualities of our endurance plus 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 Popular thin volt back silhouette for comfortable, secure fit that won't bind or gap Unique flat lock stitching for superior fit and feel Made by speedo, the world's no.1 swim brand