Patagonia Women's Active Sport Top Pull-on bra for high-impact sports made of moisture-managing performance fabric. The sculpted cups and trim fitting design of the Active Sport Top ensure support during hill sprints or stair climbs; seamless construction and racerback straps afford your arms unhindered freedom when you hit your stride. Differentiated knits provide area-specific performance: mesh in back for airflow, ribbing in the bodice for support, soft jersey weave for stretch and shape. Fabric is doubled throughout for opacity. Features: Soft fabric wicks moisture and feels silky-smooth against skin Differentiated knits provide area-specific performance: mesh in back for airflow, ribbing for support, piqué knit for stability, jersey for stretch Knits merge seamlessly so there's no chafing Fabric is doubled throughout for opacity; Inner layer has sculpted cups for support Racerback styling gives arms free-range; prevents straps from sliding off shoulders Arm and neck edges have soft binding for chafe-free comfort Trim fit 6.4-oz 93% nylon, 5% spandex, and 2% polypropylene with moisture-wicking performance