|Just My Size Womens Ultimate Comfort Bras - White 1256 fiber content is cup, strap ext: 83% cotton/ 17% spandex; inner cup frame/inner straps: 100% nylon; back lining/stap lining: 61% spandex/39% nylon. Just My Size Womens Ultimate Comfort Bras - White If you prefer a cotton bra, and many women do, you\'ll adore this maximum support cotton blend style. A hidden sling and two-ply back provide extra shaping and support. Comfortably stays in place even when you\'re on the go! Cotton stretch 2-ply . Just My Size Womens 1256 comes with 1 Bras per Pack.