When it's colder than well digger's knee outside, just a sweatshirt isn't going to cut it. You need reinforcement, you need a vest. So why not get the best vest, that is, one built right into the sweatshirt. That vest isn't going anywhere, and neither is the heat once you throw this bad boy over your shoulders. Pull over the hood and cinch down the drawstrings and you'll think you've landed on the sun, minus the tan. Crazy comfy and warm, you'll might seriously consider never taking it off. Which is cool, because when you're getting hitched and people scoff at the fact that you're wearing a sweatshirt, you can point out the fact that there's also a vest, which makes you classier than the USSR. So do it up, and keep the peace with the Puffer Fleece.