It is the lightest down jacket in the world! The flagship of our research. The mountaineering garment par excellence, no other jacket with hood and full zipper combines this lightness with the extraordinary thermal power of Levity. The secret of this jacket is the unprecedented analysis of every detail: its unique construction that we invented allows us to remove every seam and unnecessary inch of fabric, reducing the weight to the maximum while providing maximum comfort and freedom of movement. The outer fabric is a lightweight bi-elastic nylon with DWR coating treatment that makes it water-repellent. The padding is made with a quality down never seen before: Diamond Down. It is a down of the finest quality, the feathers are selected by hand one by one in order to use only the most voluminous flakes. Thanks to this work, Diamond Down is extraordinarily light and has a tested Fill Power of 950/1000. Find another jacket like this, we're not afraid of competition ;) The cells of the jacket are made with gluing, without seams, to significantly reduce the feather shedding. The down is of European origin with water repellent treatment."