Cushla Oat Down Puffer JacketFIT: True to size. Refer to size guide for specific size recommendations. FABRIC: Main: 100% Nylon, Lining: 100% Nylon, Filler: 90% Duck Down, 10% Waterfowl feathers Experience superior protection and warmth in this jacket filled with responsibly sourced, premium RDS duck down 580 fill power is designed with a signature warmth to weight ratio, for reliable insulation while keeping the jacket light Features a small, detachable storage bag to pack down