The quality of this jacket was really not what I had in mind.  I had purchased another Columbia jacket, I think it's called the Thermomater or something.  It perfectly outlined my hourglass waist and was really well made.  This Optic full zip is completely opposite.  Though I got a medium again, this was much bigger.  And the biggest surprise was its flimsiness!  You can completely see through it when holding it up, not even to a bright light!  And there is no liner at all inside.  Really strange, feels like a cheapie jacket, nothing I would expect from Columbia.  This will not keep you warm at all.  At best, it seems like it could be used in cool weather while running, though it won't block you from wind.

Only reason I gave it 2 stars is because the colors are beautiful.  It's rare to find "performance wear" with some fun colors that aren't obnoxious.