DaisyI now have two black and one silver. I am 12-14 in size and large is snug but comfortable. They are thin but really warm which I love - I forget I'm wearing one but stay really warm. All mine are at least two years old, wash well and still look good. Used casually and for more serious hiking. Will roll up pretty small in rucksack for an additional layer when needed.
JWQuite thin and very tight.
AvrilGood quality and very warm. Go a size up though . I bought a large which is snug on me, but still comfortable. Im thinking of buyng another.
NicolaThin material, but very warm. Looks great with jeans