Proyog Women's Organic Yoga Padded Racer Back Tank 92% Organic Cotton/ 8% Lycra The fitted racer back tank has a contrast shelf bra and concealed elastic for light support. The tank comes with removable pads. Proyogs HYPERBREATH () fabric is a proprietary blend of organic cotton and LYCRA fiber. To ensure that your skin comes in touch only with organic cotton, we use core-spun technology to knit the LYCRA core yarn with organic cotton sheath, to guarantee 100% opacity. The fabric is moisture-wicking and stretchable. The seams in this racer back tank have been reinforced and flattened to prevent chafing.