Firstly, let's talk about the raw materials. Silk, as a 100% natural fabric, has two best known types: one is mulberry silk and another is wild silk.

Mulberry silk

The best quality of silk is mulberry silk. It is made by the Bombyx Mori silkworm. Mulberry silk is only grown in nurseries, where the silkworm feeds exclusively on leaves of the mulberry tree, hence the name. As Bombyx Mori only eats mulberry leaves, the cocoon thread takes on a beautifully even white color. Another advantage of mulberry silk is that the cocoon threads are extra long. A cocoon of the mulberry silkworm produces an average of 1,500 meters of silk thread. This length ensures that a mulberry silk bedding product feels very soft, smooth and has a beautiful sheen. It provides the softest and most comfortable sleeping experience!

Once you look and touch on genuine mulberry silk fabrics or duvet fillings, you can instantly feel the difference from other types of silk. Undyed mulberry silk has a shiny, even white look while wild silk is more dull and brownish. All our silk products are made of the highest grade of mulberry silk. Our silk-filled duvet is filled with the highest grade of long-strand mulberry silk. Our silk bedding fabric is made from the highest grade of mulberry silk, 100% 6A grade. You may see 6A+ in our products, which is made on top of 6A grade of mulberry silk, but using a different technique to make the surface smoother and shiner, hence more expensive. Want to check out our 6A & 6A+ pillowcases and pillow shams?

Wild silk

Unlike the name seems to suggest, wild silkworms are also completely dependent on humans and do not occur in the wild anymore. However, silk is cultivated in the wild. Wild silk actually refers to all the silk types that have not been spun by the Bombyx Mori silkworm. A silkworm in the wild has a much more varied diet than the mulberry silkworm. Whereas the mulberry silkworm only eats leaves of the mulberry tree, the wild silkworm feeds on chestnut and oak leaves, among others. The cocoon threads of the wild silkworm are therefore more irregular, browner and less fine than those of the mulberry silkworm.

Since wild silk consists of shorter and thicker fibers, it always looks duller than mulberry silk. The threads also have a rougher structure than mulberry silk. These characteristics make wild silk less comfortable for bedding, although we see some brands make their duvet fillings with wild silk in the US market. 

Unfortunately, wild silk does not offer the same advantages as mulberry silk. It has fewer anti-allergenic properties, it does not offer the same heat regulation. Since wild silk is less smooth, it does not help prevent wrinkles or keep hair smooth and shiny. It therefore comes as no surprise that wild silk is always cheaper than mulberry silk.

Now you need to understand Momme

Momme (mm) is used to measure the density and quality of silk fabrics. If a piece of silk fabric with the dimensions of 45 inches by 100 yards and weighed 22 pounds, the density of the silk fabric is 22 momme. Generally, the higher the momme number is the thicker, finer, softer, smoother and higher quality the fabric is. You may see a range of 16 to 30 momme in the market. 22 momme is the most popular one as it represents a high quality-price ratio, as well as providing us with the luxurious silky feel and durability.