This is a GU sweater and dress set. Of course, they can also be used separately, expanding your styling options. I've used it about twice, but it's in very good condition. The size is M. The sweater measurements (laid flat) are: shoulder width 40cm, pit to pit 52cm, sleeve length 61cm, length 43cm. The dress measurements are: B94cm, W96cm, H106cm, length 118cm. Thank you.