The piece is built from a 100% Polyester Fabric A, paired with a Fabric B made of 50% Polyester and 50% Cotton, giving a balanced structure that supports the clean, paneled look and the relaxed, casual feel of the design. The 100% Polyester channel fabric adds a smooth, durable layer, while the 85% Duck Down filling provides warmth with a light, lofty feel that suits autumn and winter wear. With a 650 fill power and a fill weight of 60g in size S, 63g in M, 66g in L, and 69g in XL, the piece is designed to lock in heat without bulk, making it a practical choice for commuting and everyday cold-weather layering. The stand collar, long sleeves, and regular fit come together with the paneled construction to create a refined, modern aesthetic that works for casual and smart-casual occasions. The combination of the polyester and cotton blend in Fabric B adds a soft hand feel, while the duck down filling keeps the piece warm and comfortable for daily wear through the season.