Speedo Women's Guard Energy Back 51% Pbt, 49% Polyester Imported Endurance lite offers 10 percentage less weight but same long lasting property of regular endurance plus Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Full front and back lined with minimal coverage thin strap energyback styling for a comfortable secure fit that doesn't bind or gap Designed for the active lifeguard Made by Speedo, the world's number 1 swim brand