I bought this expecting a heavier weight fabric for a winter jacket, but it is definitely NOT useful as a true jacket. It is paper thin and will be most useful wearing in the early am in the summer. Not a winter-wear jacket for me, even in Northern CA. The color red is beautiful. This fit is form fitting, but the fabric is stretchy so it is comfy. I bought the small and I am 5'3", 112 lbs. Buy up in size if you don't want it skin tight. The vents under the arms are interesting because they are quite small. I especially like the long sleeves which cover your hands easily. I could wear this as a running jacket in cold weather rather than for cycling. Would I buy it again? Yes. My husband loved it on me!This is the all purpose jacket, I just love the way they fit and the versatility of it. I wear it over my t-shirt for a little warmth instead of a hoody, its fashionable to wear anywhere. Its a light weight bearier under outer wear for warmth and wind shelter for outdoor activities. I wear for skiing xcountry as it eliminates the layering bulk and works better than heavier layers of something else.. There is a stretch to this jacket so it moves with you and does not bind or hinder your movements.. I just love it and the color is alive.. this fabric washes well. This brand name is so well made.. its well worth the money.. I highly recommend.. its a meet all your needs item that is a must in anyones wardrobe.DeniseThis is an amazing jacket. I was looking for something that would be light enough to pack in my jersey pocket and this does the trick. The fabric is slightly stretchy so it doesn't pull anywhere, but still manages to be wind and water resistant and breathable. Wore this yesterday cycling in upper 50 degree weather with a light long-sleeve jersey underneath and it was perfect. The only thing that would make this better is if there were a small pocket somewhere, but with the quality of the jacket I can live without it.I bought this in one size larger than I needed because it was on clearance in this size. It's a comfortable jacket and I do like it. When I wear it cycling it blows in the wind.