SPEEDO Optical Burst Remix Flyback ProLT Made of sleek ProLT fabric, which offers loads of durability for a full season of recreational swimming and dual meets. Flyback features thin, reinforced straps for great durability and range of motion. Thin strap reinforced with overlap binding for extra durability. Designed with stretchy fabric for great shape retention. Front and back liners. Provides excellent support and freedom of motion.