DKNYC (by DKNY) Womens Gorgeous Sleepwear Tank Dress / Nightgown Very high quality fabric: 95% rayon, 5% spandex; Machine washable. 100% authentic DKNYC merchandise, satisfaction guaranteed. Great dress features ruffle details at bustline increases the feeling of elegance. You will own and wear this exquisite and comfortable sleepwear for a very long time!