I fell in love with this jacket in the store. I think I tried on every light weight, wind/waterproof jacket they had! Given my height and thin build, I need a larger size for sleeve length and end up with a jacket that is wide enough for two of me. This anorak fits like a running shirt, cut very close to the body. At 5'11 and 135, the medium fits perfectly and the sleeves are long enough that I can use the thumb holes. Although it fits snug, I didn't feel restricted on a 9.5 mile run today with a tank and performance long sleeve underneath. I was perfectly cozy on a 40 degree Chicago day and I think it will be good down to about 30 degrees.. I wore it last week in a steady drizzle and was a little too warm (65 degrees) but dry. I love the high neck and 2 way zip on the front, as well as the thumb holes. The only flaw in this jacket is the lack of pockets. There is one pocket on the chest, big enough for my driver's license, but nowhere for my phone, a gel, or to stash mittens. I'm surprised they didn't put a back zip pocket or something. This was pricey, but well worth it and stylish to boot!