A true Slip silk pillowcase dupe matches what Slip states about its own silk: 22 momme, Grade 6A long fiber, 100% mulberry silk. Several brands list 22 momme mulberry silk for less than Slip's $120 queen. A "dupe" that says satin without naming the fiber is usually polyester, which is a different material, not a copy.
I'm Erin Wise, founder of Wink Silk. I have no relationship with Slip, and our pillowcase isn't a dupe of anything. It costs more. Everything I say about other brands comes from their own websites, checked on October 30, 2026. Pages change, so check their product pages.
What makes a real Slip dupe?
With silk, the material is the product. A dupe either matches the spec or it doesn't. Here's the checklist, using Slip's own published numbers. Screenshot it before you shop.
| What to match | Slip states | What to look for on a dupe |
|---|---|---|
| Weight | 22 momme | 22 momme or higher, in writing |
| Grade | 6A long fiber | 6A stated on the product page |
| Fiber | 100% pure mulberry silk | "100% mulberry silk," not "silky" or "satin" |
| Closure | Invisible zipper or envelope | A hidden zipper or an envelope, never exposed teeth |
| Queen size | 20 x 30 inches | The same, so it fits your pillow |
Add one row of your own: a certificate number. During chemo, I looked at better silk and couldn't verify the quality of any of it. A number you can type into OEKO-TEX Label Check is the fastest way to know what you're actually buying.
Are there cheaper silk pillowcases with the same specs as Slip?
On weight, yes. Blissy lists 6A, 22 momme, 100% mulberry silk at $105.95 for a queen. Quince lists 22 momme, 100% mulberry silk, and its US page showed $44.90 when I checked. Both publish OEKO-TEX Standard 100 certification. Quince's page I checked didn't state a grade. I compare those two side by side in Blissy vs Quince.
That isn't a recommendation to buy any of them. It's the honest answer to the search: the 22 momme weight Slip uses is widely available, so compare the rest of the checklist.
Is satin a good Slip dupe?
Not if you want silk. Satin is a weave, not a fiber, and most satin pillowcases are polyester. Polyester satin can feel smooth in the store, but it isn't mulberry silk, so it isn't a dupe of Slip's fabric. If the listing doesn't name the fiber, assume it isn't silk until it proves otherwise. Here's how to tell real silk from fake.
How do I spot a fake silk dupe online?
- No momme listed. If a brand won't give the weight, ask why.
- Thread count on a silk product. That's a cotton measure borrowed from the wrong fabric.
- A certification logo with no number. A logo isn't a certificate.
- "Mulberry silk blend." A blend isn't 100% silk.
Is Wink Silk a Slip dupe?
No. A dupe costs less. Ours costs more, and here's why, plainly.
Wink makes Performance Luxury Silk™: 25 momme, Grade 6A, 100% mulberry silk charmeuse, crafted by a GOTS & OEKO-TEX certified silk house. 25 momme carries about 14% more silk per square meter than Slip's 22, so there's more fiber to wear through. Here's what 25 momme changes. Our silk house's numbers are public: OEKO-TEX Standard 100 certificate 22.HCN.30712, Product Class I, and GOTS license 00284622. Wink Silk itself is pursuing its own GOTS and OEKO-TEX certifications.
The Douceur™ single-layer pillowcase is $185, about 25 cents a night over two years. The double-layer Douceur Doublure™ is $245, about 34 cents a night, and its founding edition is 330 hand-numbered pieces, never restocked. If you came here to spend less than $120, we're not that. If you came here to know exactly what you're sleeping on, see is Slip worth it first, then compare.
Wink Privé, our free membership, opens November 2, three days before everyone else, so if you want to be there first, join at winksilk.com/pages/founding.
Wink. The brand that shows you the certificates.
Sleep beautifully.
Sources
- FAQ (Slip)
- Queen zippered pillowcases (Slip)
- Blissy silk pillowcases (Blissy)
- 100% mulberry silk pillowcase, US (Quince)
- Silk pillowcase product details (Quince)
- OEKO-TEX Label Check
Not a dupe: 25 momme mulberry charmeuse, about 25 cents a night over two years for the single layer.
Frequently Asked Questions
What is a good Slip silk pillowcase dupe?
A real dupe matches what Slip states: 22 momme, Grade 6A long fiber, 100% mulberry silk, in a 20 by 30 inch queen with a hidden zipper or envelope. Add a certificate number you can check at OEKO-TEX Label Check. If the listing says satin without naming the fiber, it is usually polyester.
Is satin a good dupe for a Slip pillowcase?
Not if you want silk. Satin is a weave, not a fiber, and most satin pillowcases are polyester. Polyester satin is a different material from Slip's mulberry silk, so it isn't a dupe of the fabric.
Are there silk pillowcases with Slip's specs for less?
On weight, yes. Blissy lists 6A, 22 momme mulberry silk at $105.95 for a queen, and Quince lists 22 momme mulberry silk at $44.90 on its US page, both with OEKO-TEX Standard 100 certification, as of October 30, 2026. Compare grade, closure and certificate numbers too.
Is Wink Silk a Slip dupe?
No. Wink is 25 momme, Grade 6A, 100% mulberry silk charmeuse at $185 single layer or $245 double layer, which costs more than Slip. It is crafted by a GOTS and OEKO-TEX certified silk house, with OEKO-TEX certificate 22.HCN.30712 and GOTS license 00284622 public.
