The Fly Direct W Vest combines an ultra-lightweight construction with the insulating power of Polartec® Alpha® Direct to create an incredibly warm vest. Its lightweight structure allows you to easily stow it in a pocket or a frame bag if the temperature rises. To make it, we started with an ultra-lightweight, windproof shell treated with a durable water repellent (DWR) finish suitable for wet terrain and brief showers. To this, we added an insulating lining of Polartec® Alpha® Direct, which is incredibly warm and breathable for its weight. The front features a YKK® Vislon® two-way zipper that glides smoothly, allowing you to adjust the temperature to your liking. Three back pockets to always have all your essentials with you. And finally, we added a reflective band on the waist for increased visibility. Overall, the Fly Direct W Vest is the ideal vest to wear when your priorities are weight, warmth, and packability.