Sierra Supreme down jacket in stretch nylon in blue. The Sierra Supreme Men's Winter Down Jacket is a soft and warm jacket, perfect for tackling the coldest of climates. Crafted from stretch nylon with a matte finish, it offers wind and water resistance. The 90/10 duck down fill ensures superior comfort and warmth, while the horizontal quilting locks in heat. Signature Woolrich details complete the look, making it ideal for any cold winter occasion. Product Code: CFWOOU0847MRUT3107 Outer: 86% Polyamide, 14% Elastane Interior: 100% Polyamide Filling: 90% Grey duck down, 10% Feather