95% GOTS-certified Organic Cotton, 5% Spandex. Smooth cotton jersey with stretch. Scoop neck. Internal elastic underband. Adjustable straps. Naturally supportive without wires or pads. Tagless. We recommend ordering your true size. Fit best suits cup sizes A-D.. Slim fit. GOTS Organic Certified by Control Union 832196 .Machine wash cold. Tumble dry low.