100 percent. That and my fingers. My ears I can take care of and be sweating in a jacket but have frost nip on my fingers and toesAnd on that note, when people who aren't acquainted with real cold stuff want to know what's the most important piece of winter clothing it's no question in my mind: BOOTS!!! Real warm durable winter boots. If you don't have a real jacket you can put on 5 sweaters and look like an idiot but not freeze. But if you don't have appropriate footwear you're done whatever you're doing in a hurry!