bigger than the bed.
Ignoring the cheapest and dearest, the second decision is filling. Manufacturer Yorkshire Linen says there are three basic types.
Hollowfibre is a synthetic with millions of strands to trap air and warmth. The filling is anti- allergenic, and is machine washable at 60 degrees, killing dust mites. Synthetic is cheaper but won’t last as long.
Duck feather and down is the cheapest natural duvet filling – the down is the best bit as the feathers are neither as soft nor as good in keeping you warm.
Goose down is lighter but offers the same level of warmth. Geese from colder climates, such as Hungary and Siberia, produce down in bigger clusters and this filling is considered the most luxurious. Goose down duvets can last for 20 years.