The Colturi W Levity Jacket might very well be the world's lightest down-insulated piece, perfect for those looking for an extremely warm and packable piece for those light and fast mountain strike missions. The Levity Jacket's unique construction eliminates unnecessary seams and excess fabric, minimizing weight while maximizing comfort and freedom of movement. The 7 denier outer fabric, while not designed to be ultra-durable and abrasion resistant, is nearly weightless, and features 2-way stretch nylon and a DWR finish for water repellency. For insulation, ultra-premium Diamond Down provides industry-leading warmth. With a Fill Power close to 1000, the feathers are hand-selected, only picking the most voluminous to maximize warmth while minimizing bulk and weight. The baffles are created using bonding technology, not sewn-through, further reducing down loss and cutting the garment's weight.