I wish people on here would use their gear before writing a review. I HAVE USED this coat for almost two months now for my go to insulation for ultralight backpacking. In camp with a medium base layer I feel it is very warm and have not had a problem dipping down into the low 20's with this coat. I know the quality is even better than the past seasons model that I also have only because this one is 900 fill. I have almost all other big name brands and I trust my life on this coat when in the Wyoming wilderness (also it's so good I had to get one for my old man too....happy fathers day. Lol)