Product details:

Recognized for their high thermal insulation, down and feather also provide an excellent weight/warmth/compression ratio. However, remember that the warmth provided comes from the combination of the weighting of down/feathers and the filling power of the jacket. Together, they provide you with warmth and insulate you from the cold. (Padding 50% down and 50% feathers in the body, recycled fill 3.5 oz/m虏 at the bottom of jacket and arms, 2.1 oz/m虏 on the collar).