Zensah Seamless Sports Bra - Best Sports Bra for Running, Comfortable Sports Bra Made in US Seamless design to prevent chafing Moisture wicking and antimicrobial fabric for ultimate comfort Body mapped to add support and ventilation and racerback for free movement Comfortable and supportive for runners Made in the USA - 94% Nylon - 6% Spandex Seamless chaff-free design Racerback Proprietary Zensah fabric Thermal Regulating Moisture Wicking