These goose down pillows are luxurious natural pillows with a crisp cotton cover and a filling comprising 60% soft, fluffy goose down and 40% fine goose feathers, for added support. Goose down is considered of superior quality to duck down simply because the down clusters, which do not contain a quill and have the ability to provide wonderful insulation, are bigger and lighter than those from a duck. More air is therefore trapped in between the goose down, making goose down pillows softer, lighter and warmer in winter, than duck down pillows. In summer, goose down pillows keep you lovely and cool as they are naturally breathable.