Great
I ordered this for my wife who is very slim and gets cold easily. I debated whether to order it or not becuase of the collar. I should have listened to myself and not ordered it. The collar is big and fairly inflexible, perhaps becuase of the heating zone in the neck itself. Regardless, it was going to be uncomfortable for my wife to wear, not to mention the vest was actually too big, even as an extra-small. It was a nice try but had to return the vest.