This is a VERY (and I mean VERY) light jacket. Think 'heavy windbreaker'. The body is lightly insulated. The arms are not insulated and are a heavy spandex type of material. I wanted a light jacket for runs in the 20-30 degree range (also using a good base layer). This jacket surprised me with its warmth! I would not suggest this jacket for leisure or for windy/very frigid temps. If you are active in it and layered properly, this is a great jacket! Arm length is awesome (I'm almost 6 ft tall), body is a tad short but all jackets fit me that way, it's fitted and the waist hits me too high. If you're a very long-torso type of gal, this might not fit well. I encourage you to try it though! The North Face has never let me down! My husband and I have 3 each and LOVE them!! Ohio weather calls for many different weight coats! Lol