Nothing beats the warmth of nature’s finest insulation for cold, stationary pursuits. Almost 5 ounces of traceable 650-fill water-repellent goose down makes this KC’s warmest bottom layer. A specially woven, DWR treated nylon shell also makes it incredibly wind and water resistant while the treated down is less prone to clumping and heat loss in high moisture environments. Two-way 3/4 leg zippers allow for venting and easy on and off without having to remove your boots. A high quality 95:5 down/feather ratio means you can pack this entire piece into its left hand pocket for convenient storage in your pack.