What is Fill power?
Fill power (for down)
Loft of the down — 550, 650, 800.
Short answer
Below 550 fill power, down loses its advantage over a good microfibre.
Fill power when buying a blanket & comforter
Loft of the down — 550, 650, 800.
Why it matters: Higher fill power gives the same warmth with less weight, so the quilt drapes instead of pressing down.
Look for: Below 550 fill power, down loses its advantage over a good microfibre.
Full Blanket & Comforter buying guide