Cos relaxed collar oversized lagenlook blouse/tunic in very good used condition.
Size 38, which from their website is a UK 10-12. This is very oversized though and I think would fit up to a UK 14-16.
Measurements are 19 inch armpit to armpit and length 29.5 inch. Long enough to wear over leggings. The fabric is Lycocell which has the texture of a heavy cotton.
One or two of the buttons could do with re-sewing on again, there is also a spare.