The Nike Womenâs Hydrastrong Transform Racerback 1-Piece Swimsuit is built for performance. The polyester Hydrastrong construction resists wear and tear to remain durable use after use, and the full bottom coverage with a high leg cut allows you to dive and swim with ease. A Swoosh on the front adds a stylish touch. Nike Womenâs Hydrastrong Transform Racerback 1-Piece Swimsuit Black, 32 - Women's Swimsuit Separates at Academy Sports