ventilation and freedom to move. the nike three-d women's tank top is made with stretch mesh fabric and a racerback for breathability and natural range of motion.. benefits. rib scoop neck and wide armholes for a comfortable fit. racerback for natural range of motion. mesh fabric for ventilation. screen print at front for athletic style. product details. fabric: body: 50% polyester/24% cotton/23% rayon/3% elastane. panel: 50% polyester/25% cotton/25% rayon.. machine wash.