Fabric Maternity fabric: Our proprietary FIONx™ fabric—in hyperstretch mode. Twice as flexible as our signature FIONx™, with moisture-wicking, anti-wrinkle, and ridiculously soft properties. Silvadur™ antimicrobial technology: Provides odor protection, inhibits bacteria growth, and extends product lifespan. Materials 75% Polyester 19% Rayon 6% Spandex Care Wash cold, inside-out Tumble dry low