Down jackets are usually filled with down or duck down, which has high bulkiness and warmth, making clothes look fluffy. The padding of cotton-padded jacket is usually cotton or wool blended material, which is relatively less fluffy than down jacket. The down jacket has a strong sense of expansion, which is easy to increase the volume visually, and then gives people a feeling of "showing fat".

The cotton-padded jacket is more close-fitting and less inflated, so it will look thinner visually.