What They say:

The Thunder Jacket is the pinnacle, über-lightweight mid-layer for outdoor athletes to sport in cold-weather conditions. With a true sweater-like fit, this luxurious 800 fill down jacket is a compact jacket for multi-purpose backcountry endeavors.

Fabric: Pertex Quantam 100% nylon ripstop with DWR
Avg Weight 332g
Insulation: 800 loft Goose Down
Length from Center Back: 25 in. 

• Performance fit
• Two hand pockets
• Jacket stows in hand pocket
• Elastic-bound cuffs
• Hideaway hem cinch cord

What GearGuys say:

What a stunning piece!! Super popular with women around the world due to its soft, luxurious fabric, slender lines, lightweight and great warmth.

Not everyone digs the Michelin-man look of other bulkier puffer jackets, this way you can have the warmth of down with a great styling.

The jacket stows into its own pocket for easy stowage in a handbag or rucksack when not in use.