Wash at a maximum water temperature of 40C. The use of bleaching agents or bleach is prohibited. Ironing at medium temperature.

Synthetic duvet covers can be washed on a Gentle Cycle programme up to 40°C.
Use moderate and not strong detergent - preferably liquid.
Do not use bleach.
Remove the duvet cover as soon as the washing machine is finished. This way you will avoid wrinkles and problems with spots / stains from contact with other clothes.
In the first 2 or 3 washes, put the duvet covers "upside down" in the washing machine. If it is a case, turn it upside down so that the good side is not in contact with the washing machine. This way you will avoid making lines in the pattern of the fabric.

Drying:

Prefer natural drying. There is the option of tumble drying on the corresponding light program.

Iron:

Iron at low temperature.

Storage:

For storage, prefer fabric cases that allow your duvet covers to breathe and keep them in a dry place.
For long term storage (over 3 months) it is very important to wash, dry, iron and store them in a cotton bag.