The gold standard for warmth-to-weight ratio. Look for a Fill Power of 600 or higher. Note: Down loses its warmth if it gets wet unless it is treated with a water-resistant coating.

Look for a blend of style and warmth, like a wool overcoat or a sleek down parka.

Heavier than down but stays warm even when wet. It’s usually more affordable and easier to wash. 3. Check the Outer Shell