At Dalzell's of Markethill we retail a large selection of 4'6" double duvets in a range of tog ratings and fillings. Natural filled double duvets can be duck down or goose down or a combination of both and the volume of natural filling can vary depending on the quality of the duvet. The more filling, the better quality the duvet.
The Bedroom Couture White Goose Feather & Down 4' 6" Duvet combines 85% White Goose Feather with 15% White Goose Down filling providing even distribution for all over warmth and comfort.
Just as efficient, and a practical choice if you're allergic to feathers, is the synthetic-filled duvet. Synthetic double duvets are usually made from polyester or polyester microfibre, and can provide the same warmth of a natural-filled duvet with less weight.
The Bedroom Couture Microfibre 4' 6" Duvet is Non-Allergenic with a Microfibre Fabric for a super soft feel and superior drape.
A good quality natural filled duvet could last you up to 30 years with the correct laundry care; it is generally recommended that you have your natural filled duvet professionally cleaned at regular intervals to extend its longevity. Although a synthetic duvet hasn't the same longevity, with a lifespan of approximately 10 years, it is a practical solution if your duvet requires frequent washing.