Great warranty. I have a DAS parka (overkill for all but the coldest days) and a micro puff hoodie which is perfect for me. I can wear a t shirt in that thing in 20 degrees. With a medium base layer you’ll be fine in 0 degrees. If it’s windy you’ll want to invest in a shell. Mine is Arc’teryx, there’s a whole subreddit for learning more about those.