If you are looking to buy a luxurious down duvet, there are a few things you should know before making the purchase:

1. Firstly, evaluate your needs. A down duvet is more expensive than regular duvets, so you need to know what you are doing. Consider what you need. Do you want a down duvet for its warmth? Do you want to use it just in winter, or all season long? What about allergies? How long do you want the duvet to last? And how much are you willing to spend? Remember that a down duvet is an investment and will last for many years if treated correctly.

2. Type of down - There are several types of down available, and can come from either geese or ducks. Duck down is higher end down and offers greater loft, softer fibre and extreme warmth. Goose down, on the other hand, is of mid range quality, with the higher end goose down being white goose down.

The highest end duck down is Eiderdown, and is the most luxurious, comfortable and lightweight of all down duvets. This is the ultimate investment for a truly luxurious bedroom.

3. Amount of down - When choosing a down duvet, you should check a weight measurement. This will tell you the amount of down in the duvet. A general rule of thumb is that the heavier the duvet, the warmer it will be. However, the warmth also depends on the type and quality of down. Also, remember that a larger duvet will be heavier, and might not necessarily mean that it offers more warmth.

4. Duvet cover material - The cover will most likely be made of cotton. In some high end luxury down duvets, the cover could be made of pure silk. Check the thread count of the fabric. The higher the thread count, the better the 'down-proof' quality will be. Better quality duvets should have a thread count of 300 or more.

5. Baffle box of square construction - This characteristic can make a huge difference in the comfort of the duvet. Lower end down duvets will be sewn with simple squares, meaning that the down cannot move around except within the square. Baffle box is a better constructed duvet. Instead of simple squares, the duvet is constructed with boxes, meaning the top and bottom layers of the duvet are not attached, except for the outer edges. This allows the down to move around and cover a larger area.

6. Hypoallergenic - If you are allergic to down or feathers, purchasing a down duvet may seem silly to you. But today, most of the down is treated with a special cleaning process rendering it hypoallergenic.

7. Dual zone duvets - This is a new product that is really special. The duvet has different levels of down in each side.

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This article was written by The White Company and offers tips of buying down duvets.