Italian 30s 40s mens belted robe M/L

Silky vintage 30s 40s men’s/unisex robe / dress robe / loungewear No fabric tag but feels like vintage luxury rayon Gorgeous pattern with gold and navy rope belt with tassels Purchased at high end vintage shop in London for my husband but he’s never worn it Could be unisex or even worn as a duster or dress Per sizing chart Italian 48 = US XL I’d say this is more like a modern day M/L but please see flat lay measurements