So I got this jacket for my girlfriend for V-day and she has worn it once so far. She is always cold by nature and said she was warm the whole day. It was cold in the morning and hot an sunny by afternoon. I was just warming my shorts and she still had the jacket on, so I assume it has great climate control. We both really enjoy these products by SUP so far and will be purchasing the other layers as we go along. We live in Sarasota, FL and the water is pretty warm in the winter, compared to o...ther parts. I would say that the gulf is about as cold as the pacific is in the summer. I maybe should have gone with the polypropylene jacket, but since she is tiny and always cold, I went with the neoprene.