I have listed as medium as I’m 6ft/170 lbs and this fits well. It was purchased in Italy and is a XL in Italian sizing but it’s a medium or perhaps a large (if on the edge) for American sizing.

This Giordana cycling jersey is perfect for winter rides, keeping you warm and comfortable on even the coldest days. . Zip neck, layerable, reflective accents and back pockets. Made in Italy, this pre-owned jersey is designed with fleece fabric for ultimate insulation. The blue color and stylish design make it a great addition to any cycling wardrobe. The jersey is suitable for men of size M and is perfect for cycling enthusiasts who enjoy taking on challenging cycling terrains. Its performance and activity-oriented features make it a great pick for cycling enthusiasts.