I bought this vest to wear over my armoured motorcycle shirt for some added warmth and wind protection in the cooler temps. I’m 5’8” 160lbs and I bought a medium so it would fit over my armoured shirt or puffy jacket. If I was going to wear it with lighter layers underneath I pro could have gotten away with a small. I like the fit, the quality is good and it looks great. I wish it had a plastic zipper rather than the metal one as they usually last longer. I also wish it had a flap to cover the zipper either in front or behind the zipper depending on what zipper was used. All in all I’m happy with the vest, it’s warm, comfortable and does what I intended it to do. Looks great too, I’ll likely wear it for more than just riding my motorcycle.