I tried it on once. It was too cute for me (=^ェ^=) I washed it. It hasn't even been a month since I bought it. It's a size L, but I think it would fit someone who usually wears a size M (unless you want a really tight fit). Measured flat: Width 42 cm Length about 45 cm? (It's off-the-shoulder, so it's hard to tell, but I think it's adjustable)