What Does Momme Mean in Silk?
What is momme? It is a measure of silk fabric weight per unit of area. Rather than counting threads, it describes how much a given area of cloth weighs. The silk trade uses momme to distinguish lighter fabrics from those with more substance, offering a useful starting point for understanding their feel.
It is a specification, not a verdict on quality. A lighter silk may suit a floating scarf; a heavier fabric may be chosen for a more structured piece. The right weight depends on what the fabric is being asked to do.
How Is Silk Weight Measured?
In the traditional trade definition, the momme number is the weight in pounds of silk measuring 45 inches wide by 100 yards long. Converted to metric units, one momme is approximately 4.34 grams per square metre, often written as GSM.
Multiply the momme weight by 4.34 to find the approximate GSM: 19 momme is 82.5 g/m², while 22 momme silk is 95.5 g/m². These figures describe the fabric alone, not the weight of a finished sleep mask, its lining or its strap.
Fabric weight is distinct from fibre quality and workmanship. Yarn characteristics, weave, finishing and stitching all contribute to the finished object; none is fully described by a single number.
19 vs 22 Momme Silk
For the same area, 22 momme fabric weighs about 16 per cent more than 19 momme. In otherwise comparable fabrics, it can have a fuller hand and more body, while 19 momme may feel lighter and more fluid.
That does not make the higher number automatically better. Different weaves can produce quite different textures at the same weight. Fibre quality, finishing and construction also matter, so neither softness nor lasting wear can be guaranteed by momme alone.
Why We Chose 22 Momme
For the CalmiZone Silk Sleep Mask, we chose 22 momme Grade 6A mulberry silk for its balance of substance and a smooth, supple feel. The fabric has a quiet presence in the hand, without needing to feel heavy against the face.
Our choice of 22 momme mulberry silk sits within a wider design: a contoured shape that leaves space around the eyes, considered seams and a silk-covered strap. Comfort comes from how these details work together. The weight supports the design; it does not replace it.
Why Slow Materials Calm Us
Silk begins with a cocoon, then passes through reeling, weaving and finishing before it becomes cloth. Its natural origin is only the beginning: skilled work gives the fibre its finished character.
There is something quietly reassuring about materials that take care to make. Choosing silk for the last hour of the day can become a small, deliberate echo of what the mask itself asks of you: slow down, on purpose. The feeling is personal, a ritual rather than a promise.
“A single thread, wound slowly. Nothing about good silk is in a hurry.”
