This jumpsuit is made of a lovely, breathable, soft and stretchy fabric. It is cut in a way that is comfortable but still shows some shape. The pull cord attached to the back zipper is a really nice detail for ease of off and on. I am typically between and xs and a s, I ordered a small and it fits wonderfully, but I think the xs would have fit too, just a little less relaxed. I would say pretty true to size.