So the material is that stretchy polyester that's more of a lycea feel. I sized up thankfully or it wouldn't have fit. So instead of a 3x, I went with a 4x. But I'm not a fan of having things cling to and accentuate my rolls.The weird thing that made me send it back was on the side with the long arm there's a huge gap between the waist and the arm. So I would have had to wear something underneath, like a bandau bra or a cami with no straps in order to you know not show that stuff. If I put my hands above my head you could see that area was open.It’s a beautiful dress but I feel that it wasn’t true to its sizeI have ordered many items from them. If you are short their clothes are not for you. But this dress surprised the heck out of me. Order the 5xl and it barely reached my knees. I normally wears a 3x.I brought this dress because I love the off the shoulder look. It was not flattering at all. I even tried it with a belt. It doesn't show the hole on one side of the dress. It is somewhat then. Not for me..