8 Best Down Comforters (2025), Tested and Reviewed

Look for a cover thread count between 230 and 500. Fabrics with these thread counts are “down-proof” and minimize the chances of feathers poking through. Fill power vs. fill weight: Fill power is a measurement of how much space, in cubic inches, an ounce of down takes up—for instance, a fill power of 600 means one ounce of down will take up 600 cubic inches. A higher fill power means fluffier, more efficient down. Fill power doesn't necessarily translate to warmth, but it's an indication of the quality of the down and how much the down compresses. Fill weight, on the other hand, is the amount of down inside the product. If something has high fill power but low fill weight, it won't necessarily be warmer than if something has low fill power and high fill weight. It's a little confusing. The most important factor is how the down is distributed. Look for baffle-box or sewn-through construction in your comforters for an indication that down will be distributed evenly and keep you warm thr ... Read full article.