Plenty of warmth in a small, lightweight package. The Women's Helium Ice Jacket is warm and windproof. It provides reliable insulation at a minimal weight. This is thanks to the premium-grade down fill that Jack Wolfskin have used in this jacket. The down has also been treated to render it insensitive to moisture. And the thin, windproof outer fabric makes it even warmer by protecting against wind chill.The Women's Helium Ice Jacket also takes up very little space in your pack. It stashes neatly in its own hip pocket to form a compact little bundle. So you can take it with you any time you might need a little extra insulation.