This jacket IS warm despite being only 600 fill power. You will need the core vents. That's the good thing. The hood is great, fits well, doesn't obstruct your vision and the collar even looks cool. Jacket looks hot with or without the hood. Problem, it's not anywhere near as form fitting as the pic. From the waist up this jacket looks amazing. Below the waist (and I'm not fat) the jacket bulges and looks like maternity gear. Perhaps I should send it back and get a size M. I've had the worst luck with TNF jackets. The sleaves on the mediums are too short and constricting in the shoulder area and the large jackets are waay to big in the body area. *sigh* try, try again.