Mulberry Silk

At BURR, we work closely with our suppliers to ensure that high quality standards are met. All BURR silk products are made using the highest grade (6A) 100% pure mulberry silk - the highest quality silk available.

Mulberry silk is the continuous fiber made by silkworms of the Bombyx mori moth. These silkworms are fed only mulberry leaves which produces the finest silk in the world. Mulberry silk is natural and hypoallergenic.

Silk fabric uses momme to measure weight and quality. The average weight for silk ranges from 12 to 22 momme (with 19 momme and above as high quality). All BURR silk pillowcases are made using 22 momme silk and face masks using 19 momme silk).

Higher momme = higher quality = longer expected lifespan

Oeko-Tex Certified

STANDARD 100 by OEKO-TEX® is one of the world's best-known labels for textiles tested for harmful substances. A product labeled as OEKO-TEX® certified means that it is completely free from harmful chemicals and safe for human use.

Every BURR silk product is tested and OEKO-TEX® certified. An OEKO-TEX® label with a label number is attached to every BURR silk pillowcase. The validity of the labels can be checked via the official website.

Its validity status as well its product class will be shown. What does product class mean?

STANDARD 100 by OEKO-TEX® distinguishes between four product classes:

(Class I) Infants and young children,

(Class II) skin contact,

(Class III) without skin contact,

and (Class IV) accessory materials.

All BURR silk products belong to Class I. This means that all materials used for the production of BURR silk products are safe and suitable for babies and young children. This includes non-toxic dyes.