Furniture
Fill Power
Definition
A measurement of down cluster quality. One ounce of down is compressed and the volume it occupies in cubic inches is its fill power. Higher numbers (650–800+) indicate larger, more resilient clusters that provide more loft and insulation per unit weight.
Why it matters for dupe shopping
The RH Cloud Sofa uses a down-feather blend with high fill power to achieve its signature 'sink-in' feel. Budget alternatives that use low-fill-power down or synthetic fiberfill produce a compressed, flat cushion within 6–12 months of use.