Really warm down jacket - Arc'teryx Thorium AR Hoody - Men's

This is my go to jacket when it's in the 30's or below, it is very warm! The fit is generous without being over-sized, and not so tight that it's difficult to wear bulkier layers underneath. It's also a nice "medium puffiness", so you don't look like a huge marshmallow. I primarily wear it as my everyday jacket and sometimes during lightly active stuff, otherwise I'll just get too warm. There is an inside chest pocket that can be used as a stuff pouch but I really just use it for my cell phone. The dwr finish is good and will hold up for a short time as expected, so unless you're out for an extended period of time in a snow storm you'll be fine. This is a great option if you're wanting something really warm but don't want to go to the size of a parka.