Quick Down Duvet Buying Tips
To provide yourself with the highest chances of selecting the right down duvet, here are a few tips:
Loft
Loft (fill power) is a classification for the insulating power of the down. If the down is "800 loft" this means 1 ounce of down represents 800 cubic inches of volume. The larger the volume, the more insulating power the down offers.
By choosing a higher loft, the duvet does not require as much fill to offer the same overall level of warmth. This is easy to see in the product specifications - an 850 loft Lajord queen summer duvet has 14 ounces of fill, while a 1,000 loft Embassy queen summer duvet only requires 10 ounces of fill to offer a comparable level of warmth.
Warmth Level
Choose a cooler duvet such as an ultralight or summer duvet. St Genève down duvets are designed in such a way that the duvet can be sent back to the factory in Richmond, BC to have additional down added to the European baffle boxes. There is a cost for this service, but it is reasonable.
However, as the chambers only work in one direction, it is not possible to remove down. For this reason, a cooler fill weight is a better choice to start with.