I spent 9 days in N BC and never took off my hooded Peloton 240, and the Microtex shirt and Paradox zip neck under it. Weather was in the 40s when I went in and dropped to single digits at our tree line camp. On climbs the P240 was the outer layer and at other times I had a Spindrift jacket over it and/or Superdown jacket and/or Chugach rain gear. Even a Cabela Berber fleece vest layered over it one super cold morning. I really like the Peloton 240. Great piece of clothing.