The garment shown is a vintage ski suit (one-piece / jumpsuit) from the luxury brand Authier, inspired by classic military and aviator coveralls. It stands out with its matte olive-green design, characteristic contrasting sheepskin collar (mouton collar), distinctive shoulder straps, gathered elastic waist and numerous utility-style zip and sleeve pockets.
The traditional Authier brand is known for high-quality, bespoke winter sportswear that combines functionality with a sophisticated retro look. As these pieces often fall into a very high price range when new, they are now sought-after collector’s items on vintage and second-hand platforms.