The classic buttonless blazer by Random Identities.

An easy and versatile blazer to wear on a daily basis. The shoulders are slightly exaggerated but sharp, with a slightly tapered midriff it creates a great silhouette (I have a stock image of it being modeled in the last picture).

The marked size is 44 EU (34 US) - I would say this would fit an XS-S. I'm normally an XS in Comme des Garcons suits and this fits me with a slightly more standard fit than the slim silhouette I'm used to, so this could easily fit someone who wears a S (or 46 EU/36 US suit size) and wants a slightly slim fit.

Feel free to ask any questions.