This hoodie masters the art of addition by subtraction, removing excess fill for better temp control. The majority of the Ellipse is made of a midweight merino/poly blend, while the chest and hood have panels filled with merino. “I never became too hot during high-output activities,” says one tester who wore it for ski tours in the Arctic Circle and shoulder-season hiking in the Swiss Alps. The insulation kept his core warm during 30°F alpine starts, while the uninsulated back and arms prevented overheating while wearing a pack. A sternum-length zipper adds extra ventilation. Our tester also enjoyed the thumb loops and long, stretchy sleeves when reaching overhead. Ding: price.