Rayon Blend stretchy body, slinky skirt poly/spandex blend. Has side seam pockets. True to your “larger size”. If you between sizes, choose the larger size. You can play around with sizing and go up if you want a more flowing fit. Take this dress from summer to fall easily with a denim jacket or cute cardi. Nice long length that can be tied up a bit for a different look or to take up length. Gorgeous vibrant colors!