Based on a review I ordered up a size (small), but it was too big. I recommend going by the sizing chart and not worrying about ordering up or down...just read the numbers! The first one I got was red, and it looked nice, but very sporty. I exchanged it for the white/blue xs and it is the best thing I have ever worn! I am about 5'5" with a small frame. All parts of it fit great and it looks so nice. I think the white/blue is a lot fancier than the red. I wear a short sleeve jersey and armwarmers underneath and my body stays warm long after my toes and hands go numb from the cold. No wind (even at 35+) seems to make its way through either. Wearing white worries me, since I tend to get stuff dirty, but spots wipe right off with a damp cloth. Nothing about this jacket is off! The price is kinda high, but it is great quality, and I really haven't thought twice about it since using it.