This all-season long-sleeved T-shirt is from Smoothday, the predecessor to Nonnotte and Aubett, a brand known to those in the know. The size is 3, which is equivalent to men's M or women's S. I purchased it around 2016. Even back then, models other than T-shirts and coats from this brand were rarely seen in the used clothing market. It was a powerful factory brand that also supplied fabric to high-end brands. It's made of thin Diorama fabric. Color: Black