Super light, yet oh-so warm. You ll make up excuses to throw this jacket on thanks to our 800 fill power down. After all, it is one of the lightest, yet warmest, chill-blockers out there. Not to mention it s water-resistant, so no need to fret if it gets wet. What s better? We use a special, antistatic thread to protect against excessive feather leakage. No molting here. This jacket will be your Mvl (Most Valuable Layer) when temps dip. Plus, it s packable! Just throw it in your bag or backseat to easily grab and go..