Linen is a very durable, lightweight fabric produced from the stem of the flax plant. Linen is a notoriously strong fiber. It’s three times stronger than cotton (the Bureau of Engraving and Printing even uses it to make bills) so you can expect your linen sheets to last for many years.

With its smooth finish, incredible durability,  and resistance to pilling, Egyptian cotton is the highest quality cotton you can find. It’s typically made with an extra-long staple — the longest cotton fiber available — and can be fairly pricey for the real stuff. 

 To sum up, the weight of a duvet insert plays an important role in determining its comfort and adaptability to different climates and personal preferences.  Whether you choose an ultralight, midweight, or heavy-duty duvet insert, understanding the features of each type will help you make an informed decision and ensure a good night's sleep.