ZeroXposur Mesh Inset Action Black Tankini Top - Size 10 80% Nylon/20% Spandex Swim and Play tankini top delivers an athletic look that's perfect for any water activity. Mesh Inset Action Tankini Swim Top. Racerback offers a supportive, stay-in-place fit. Built-in shelf bra and lightly padded cups ensure shaping and support. Womens US Size 10