This is a navy flannel shirt dress from MUJI. I bought it about two years ago and have worn it about 10-15 times. I used to wear knitwear underneath. I don't think there are any noticeable stains. It has a gathered design at the back of the neck, creating a relaxed silhouette. It's labeled XS-S, but I think it would fit someone who usually wears a size M. Flat measurements: Shoulder width 55cm, Bust 55cm, Upper arm circumference 20cm, Sleeve length 45cm, Cuff 10cm, Length 105cm. 100% cotton. Has pockets. I'm selling it at a low price, so I'm not offering any discounts. Thank you.