Comfortable organic cotton blend that is stretchy and shapely in medium weight textiles. Spandex content adds the good recovery of fabric to hold the shape (and our body in it). This bra is a pullover, like all our bras, and has a racer style back for your utmost comfort. 1" covered elastic under the bust, this bra does not slip or slide, great for yoga and everyday wear. It looks great but runs small, size up (see measurement chart below).