A clinician's standard
Created by a dermatology PA who spent 15 years treating skin. 25-momme mulberry silk with silver-ion technology.
25 Momme Mulberry Silk
Silk Duvet Cover
FOR COOLER NIGHTS AND A SOFTER, CLEANER SURFACE
GENTLE ON SKIN: Minimises friction against skin through the night
COOLING + BREATHABLE: Naturally thermo-regulating silk, comfortable across every season
CLEAN SLEEP SURFACE: Woven with SILVADUR™ silver-ion technology, stays fresher between washes
LIGHTWEIGHT COMFORT: Smooth, breathable weave that wears beautifully year-round
LASTING QUALITY: 25-momme, 6A grade Oeko-Tex® certified mulberry silk, built to hold its softness wash after wash
Why Silk Matters for Skin and Sleep
Unlike cotton or synthetics, silk absorbs less moisture and skincare, so your hydration and products stay on your skin rather than being pulled into the fabric. ZILK's tightly woven 25-momme silk minimises friction through the night, gliding against skin instead of tugging at it.
What Makes 25-Momme Different
Momme measures silk's weight and density. ZILK uses 25 momme, a denser weight than standard 19 and 22 momme silks, creating a stronger fabric with a smoother finish that holds up wash after wash.
The Clean Sleep Surface
ZILK is woven with SILVADUR™, LANXESS' patented silver-ion technology, designed to resist odours and keep silk fresher between washes.
Silk's naturally smooth, dense weave absorbs less than cotton and stays breathable through the night. The thermo-regulating 25-momme weave keeps the duvet cool and comfortable no matter how you sleep.
Suitable for: All skin types
Treatment: Silver-ion infusion
Fabric: 100% 25-momme 6A grade Mulberry silk
Closure: Hidden zipper
Certification: Oeko-Tex® certified, responsibly made, non-toxic
Care: Machine washable on delicate cycle with pH-neutral detergent; air dry flat or tumble dry low
FREE SHIPPING LIMITS:
- NL & BE from €70
- DE from €110
- International from €120
Orders received before 15:00 CET Mon-Fri are shipped same day; after 15:00 CET shipped the next day.
€3.95 shipping costs within NL on orders below free shipping threshold. For rates to other countries, please see our shipping policy
Returns: 60-day returns on unused, unwashed items in original packaging. EU 14-day right of withdrawal applies. See full policy.
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Product information
INSIDE EVERY ZILK PIECE
Silver Ion Technology
Every ZILK piece is treated with Silvadur™ silver-ion technology, from LANXESS. Designed to keep silk fresher between washes while staying gentle on skin.
- Silvadur™ silver-ion treatment
- Fresher silk, wash after wash
- Oeko-Tex® certified for textile safety
- bluesign® certified for responsible textile production
Independently tested
ZILK silk was washed 20 times, then tested by SGS. The result: its silver-ion technology still inhibits the growth of bacteria on the fabric surface.
- 20 washes
- 99.5% fewer S. aureus
- 99.3% fewer K. pneumoniae
S. aureus and K. pneumoniae are the two standard bacteria used in textile testing.
Ritual of Restoration
Silk at every touchpoint
Every ZILK product is made from 25-momme mulberry silk, infused with SILVADUR silver ions. The collection is designed around a single idea: smooth, cool silk, engineered to stay clean between washes, supports the nightly ritual of rest.
INSIDE EVERY ZILK PIECE
Silver Ion Technology
Every ZILK piece is woven with SILVADUR™, LANXESS' patented silver-ion treatment. Designed to keep silk cleaner between washes while staying gentle on skin.
- SILVADUR™ silver-ion treatment
- Fresher silk, wash after wash
- Oeko-Tex® certified for textile safety
- bluesign® certified for responsible textile production
ENGINEERED FOR ENDURANCE
25 MOMME SILK
Most silk pillowcases are woven at 19 to 22 momme. ZILK uses 25. The difference is a tighter weave and a smoother surface that holds its beauty through years of washes.
HIGH GRADE MULBERRY SILK
6A Silk Quality
ZILK uses 6A-grade mulberry silk, the top tier of the standard silk grading system. 6A silk is woven from the longest and smoothest fibers, giving the fabric a uniform weave that resists pilling and glides against skin and hair night after night.
INTERNATIONALLY VERIFIED SAFETY
OEKO-TEX® Certified Clean Sleep
ZILK meets the globally recognized OEKO-TEX® STANDARD 100—the world’s leading independent certification for textile safety. Every silk fiber is tested for more than 1,000 potentially harmful substances and verified safe for daily contact with skin.
- Independently tested for 1,000+ substances
- Certified safe for sensitive skin and hair
- Free from toxins, irritants, and allergens
- Certified STANDARD 100 by OEKO-TEX®
THE SCIENCE BEHIND THE FEEL
SILK, ENGINEERED FOR REST
Every ZILK piece is woven from 25-momme mulberry silk and infused with SILVADUR™ silver-ion technology, made for the surface skin and hair rest on a third of your life. A cooler, smoother, quieter surface than what most people sleep on.
- Cool, smooth contact against skin through the night
- Less friction, less pulling on skin and hair
- SILVADUR™ silver-ion infused, stays fresher between washes
Frequently Asked Questions
How do I wash my silk duvet cover?
Machine wash in cold or lukewarm water on delicate with a pH-neutral detergent. Use a mesh bag and wash with similar colors. Air dry flat or tumble dry low.
Does silk help with night sweats or temperature changes?
Silk is naturally thermo-regulating, which means it adjusts to your body temperature, staying cool when you run warm and warm when you run cool. ZILK's 25-momme silk has a breathable surface that helps keep you comfortable through the night, whatever your body temperature does.
What are silver ions and why are they used in ZILK silk?
Silver has been valued for its cleanliness properties for centuries. ZILK silk is treated with SILVADUR™, LANXESS' silver-ion technology, designed to resist odours and keep silk fresher between washes.
How long will my duvet cover last?
With proper care, ZILK’s 25-momme silk maintains its softness, sheen, and durability for years of nightly use.
WHY CHOOSE ZILK?
™ Trademark of LANXESS Deutschland GmbH or its affiliates.
SGS Test Report SL52615326175601TX×
