Eiderdown is considered by many to be the best down in the world for several reasons.
Firstly, eiderdown is extremely rare. It comes from the nests of eider ducks, found in the cold coastal regions of the Arctic and sub-Arctic. Eider ducks are a protected species, and their down can only be harvested in limited quantities during specific times of the year. This rarity makes eiderdown very exclusive and highly sought after.
Secondly, eiderdown is very soft and lightweight, yet incredibly warm. This is due to the unique structure of eiderdown clusters, which are larger and more resilient than other down types. Eiderdown also can trap a lot of air, which helps to keep you warm even in freezing temperatures.
Finally, eiderdown is hypoallergenic, making it an excellent choice for people with allergies or asthma. Eiderdown is naturally resistant to dust mites and other allergens, and it has been shown to have a calming effect on the nervous system, helping to promote better sleep.
Overall, the rarity, softness, warmth, and hypoallergenic qualities of eiderdown make it highly prized by luxury bedding and clothing manufacturers. Many people consider it to be the best down in the world.