52% linen, 48% cotton. This is a see-through knit sweater with a light green gradient. There is no size label, so I'm listing it as a size M, but please refer to the measurements below. Length: Approximately 53cm Width: Approximately 50cm (measured around the chest area, but approximate due to the sleeve shape) Since there are still some hot days, how about layering it? I will ship it via Yu-Yu Rakuraku Mercari delivery. Thank you.