Comment: This is an great jacket/shirt for riding and perfect for days when the weather is cooler. The combination of snaps and front zipper closure make for a secure fit. Collar snaps down as well so it wont slap you in the face going down the road. I found that the shirt ran small for me. I am 5'2" and 145 lbs and normally wear a medium in most tops, sometimes a large. Based on the chest sizes listed I ordered a large. While I was able to zip and snap the shirt, it was super tight and uncomfortable. I next ordered the XL and 2XL. The XL was better but still kind of tight, not comfortable with anything other than a t-shirt under it. I ended up keeping the 2XL. The sleeves are a little long but rolling the cuffs one time works. I can wear a t-shirt and sweater or vest underneath and its still comfortable. Overall a very cool piece of gear and I highly recommend it.