Quick answer: Mulberry silk is the highest-quality silk, made from the cocoons of silkworms fed only on mulberry leaves. "Momme" (mm) is the unit that measures how heavy and dense the silk is, the higher the momme, the more durable and substantial the fabric. For sleep accessories like masks and bonnets, 19 momme is smooth and lightweight; for pajamas you wear and wash often, 22 momme adds durability. All SilkyBerries silk is 100% Grade 6A mulberry silk.
What is momme, and what number should I look for?
Momme measures the weight of silk. Most quality silk products fall between 16 and 25 momme. Below that, silk can feel thin; much above it, garments get heavy. Here is how the common weights compare:
| Momme | Feel | Best for |
|---|---|---|
| 16-18 mm | Light, delicate | Scarves, linings |
| 19 mm | Smooth, lightweight, still durable | Sleep masks, hair bonnets, pillowcases |
| 22 mm | Substantial, hard-wearing | Pajamas and everyday silk garments |
| 25 mm+ | Heavy, luxurious | Premium bedding and robes |
Choosing by use case
For protecting hair and skin overnight
A silk hair bonnet or sleep mask works because silk creates less friction than cotton. That means less tugging on hair and on the delicate skin around your eyes. A 19 momme weight is ideal here: smooth and light, but durable enough for nightly use.
For comfortable, breathable sleepwear
Mulberry silk is naturally breathable and temperature-regulating, so it feels cool in summer and retains warmth in winter. For something you wash regularly, choose a heavier 22 momme weave like our mulberry silk pajama sets for women and children.
For gifting
Silk is a reliable gift because the sizing is forgiving (free-size accessories) and the material feels premium. Browse mulberry silk gifts across price points.
How to care for mulberry silk
Hand wash in cold water with a mild, pH-neutral detergent, or use a gentle machine cycle inside a mesh laundry bag. Avoid wringing, bleach and direct heat; lay flat or hang to air dry away from direct sunlight.
FAQ
Is higher momme always better? Not necessarily. Higher momme is more durable but also heavier and pricier. Match the weight to the use: lighter for accessories, heavier for garments you wash often.
What does Grade 6A mean? 6A is the top grade in the common silk grading scale, referring to long, uniform, high-quality silk fibers.
How do I wash silk without damaging it? Cold water, mild detergent, no wringing, and air dry. A mesh bag protects it during a gentle machine cycle.