From the site: Details & Care - Our #1 best-selling bra complete with a racerback, long-line silhouette, and support band that'll never let you down. Made with COMPRESSIVE for smoothing, sculpting support Compressive is made with 79% recycled water bottles (RPET) and 21% spandex Designed for medium impact activities Double lined, sweat-wicking material with four way stretch Racerback Scoop neck Built-in support band Form-hugging fit