For ultralight, cold-weather comfort, wear the women's ThermoBall Full-Zip Jacket. It's as warm and packable as down, yet insulates even when wet.

• Highly compressible ThermoBall synthetic insulation offers warmth equal to 600-fill-power goose down
• Unlike down, ThermoBall insulates even when wet to keep you warm
• Shell has a durable water repellent finish to repel light moisture
• Zippered hand pockets
• Internal elastic cuffs; hem cinch-cord
• Stows in its own zip pocket
• ThermoBall jackets were thoroughly tested by The North Face athletes, including Conrad Anker and Jimmy Chin, during summit trips on Denali and Mount Meru