NT by Amati linen blend tunic pockets high low lagenlook made in Italy

Very nice high low viscose linen blend. Even has pockets! New with tags. Very pretty. Not sure of size ( says size 1 but not sure how sizing works) think meant to be a bit oversized so estimate to be a size medium or large but please check measurements. Approximate measurements when laid flat pit 20.5 inches length front 25.5 inches length back 36 inches.