I have one with a faux fur zip-in liner and I use it in winter in Pennsylvania. I wouldn’t wear it much below -20F, but it doesn’t often get that cold here. The collar flips up and reveals a strap with a snap that goes across neck to help keep cold air out. This is nice on cold windy days. It works with a scarf too. In my opinion the biggest issue in really cold weather is my arms will be cooler than my torso because the liner doesn’t go down the arms.