... but really, just a touch. This is a great jacket for temps in the 30s (under a shell) or 50s-60s (alone) but if you're looking for some serious insulation, this is not for you. I know, it says "LT" -- take that seriously, and if you need something truly warm, go for the AR version instead.
That being said, this jacket is fantastic when you just need a little warmth - super lightweight, very breathable, and very easy to layer over. Truly a 3-season jacket that can span a range of conditions. It's also very easy to layer over. I got the non-hooded version for maximum versatility.
Like some Arc'teryx items, the fit is a bit of a mystery -- some things run small, while others are large; this one is in the latter category. If you're between sizes, I would recommend sizing down rather than up.