Speedo Women's Mesh Sport Back Endurance Lite Swimsuit 51% Polybutylene Terephthalate, 49% Polyester Imported Endurance Lite offers 10% less weight but same long lasting property of regular Endurance+ Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Four-way stretch technology provides a body hugging fit, great shape retention, and soft comfort Exclusive Speedo HydroForm bra construction that combines molded foam with power mesh for added support and long lasting comfort that won't retain water Made by Speedo, the world's #1 swim brand