The cushion has a fill of 95% duck feather/5% down. 100% of our down is independently certified to the Responsible Down Standard (RDS). RDS certifies down and feathers against animal welfare requirements and tracks it from farm to final product.
For a plump cushion, use an inner that's the next size up from your cushion cover (5cm each way). We recommend this inner for a 50x50cm cushion cover.