Mulberry Silk Explained: Momme Count, Grades & What They Actually Mean

If you've spent any time shopping for silk pillowcases, sleep masks, or scrunchies, you've probably come across terms like "momme count," "6A grade," and "mulberry silk" thrown around fairly loosely. These terms actually describe specific, measurable things about the fabric — and understanding them can help you compare products more confidently, rather than relying on marketing language alone.

What Is Mulberry Silk?

Mulberry silk comes from silkworms that are fed exclusively on mulberry leaves, in a controlled farming process. This diet and controlled environment produce a finer, more uniform fibre compared to "wild silk," which comes from silkworms feeding on a variety of leaves in less controlled conditions. Mulberry silk is generally considered the higher-quality standard for bedding and accessories because of its consistency and smoothness.

What Is Momme Count?

Momme (pronounced "mah-mee") is a unit of measurement that describes the weight and density of silk fabric, traditionally based on the weight of a fixed area of fabric. In simple terms: a higher momme count generally means a denser, more substantial fabric, while a lower momme count means a lighter, thinner fabric.

For pillowcases and sleep accessories, momme counts typically range from around 16 to 25:

• 16–19 momme: Lighter weight, often more affordable, still smooth but slightly less substantial.
• 19–22 momme: A common mid-range choice, balancing durability with a soft, fluid feel.
• 22–25 momme: Heavier and more durable, often considered a premium range for pillowcases.

It's worth noting that a higher momme count isn't automatically "better" for every use — a heavier fabric can feel warmer, which may or may not suit your preference depending on your climate and how you sleep.

What Do Silk Grades (Like 6A) Mean?

Silk grading refers to the quality classification of the raw silk fibre itself, based on factors like fibre length, uniformity, and the presence of any irregularities. Grades typically range from lower grades up to 6A, which is generally considered the highest commonly available grade for commercial use. A higher grade generally indicates fewer imperfections and a more consistent, smoother fibre.

When shopping, look for products that specify both the grade and momme count, rather than just using "premium" or "luxury" as a description — specific numbers give you a clearer picture of what you're actually buying.

How to Use This Information When Shopping

• Check for "100% mulberry silk" rather than vague terms like "silky" or "silk-like," which often indicate a synthetic blend.
• Look for a stated momme count so you know what weight of fabric you're getting.
• Check the grade if it's listed — products that specify grading are generally being more transparent about quality.
• Compare care instructions — higher quality silk should still come with clear washing guidance, as even premium silk requires gentle care.

Frequently Asked Questions

Is a higher momme count always better?

Not necessarily — it depends on your preference. Higher momme silk is generally more durable and substantial, but it can also feel warmer, so lighter momme counts may suit people who prefer a cooler feel or live in a warmer climate.

What momme count is best for a pillowcase?

Most pillowcases fall between 19 and 25 momme, which offers a good balance of durability, softness, and drape. Ultimately, personal preference plays a large role here too.

Does momme count affect how the silk washes?

Care requirements are generally similar across momme counts — gentle, cool washing is recommended for all genuine silk — though heavier momme fabric may hold its shape slightly better over repeated washes.

Every product in our silk collection is made from genuine mulberry silk, with momme count and material details listed on each product page so you know exactly what you're choosing.