The real cost of a silk pillowcase is what you spend divided by the nights you sleep on it. If a $185 pillowcase lasts two years, that's about 25 cents a night. If a $245 one lasts two years, about 34 cents. The price itself pays for four things: how much silk is in it (momme), how good the fiber is (grade), whether anyone independently tested it, and how carefully it was sewn.
So this isn't an argument that expensive is better. It's a way to see what you're paying for, and to run the math with your own numbers.
How do you work out the cost per night of a pillowcase?
Cost per night = total you spent, divided by nights of use.
"Total you spent" includes every replacement. If you buy a cheaper pillowcase and replace it, add both prices together. "Nights of use" is your own estimate, and nobody can honestly promise it in advance, because it depends on the fiber, the momme, and how you wash it.
Here's the math on our two pillowcases, with the length of use left as a choice, not a promise:
| Pillowcase | Price | If it lasts one year | If it lasts two years |
|---|---|---|---|
| Douceur™, single layer | $185 | About 51 cents a night | About 25 cents a night |
| Douceur Doublure™, two layers | $245 | About 67 cents a night | About 34 cents a night |
| Any pillowcase you're considering | Its price | Price divided by 365 | Price divided by 730 |
Run the last row for anything in your cart. If your honest estimate means you'd buy the cheaper one several times over, add those prices up first. If you like to change colors often, or you're hard on bedding, the cheaper one may come out ahead. Both answers are fine. The point is that you did the math with your own habits, not a brand's promise.
Why does cost per night matter more than the price tag?
My husband, Cooper, has a favorite superhero T-shirt that's been washed until it's see-through. I've tried to throw it out several times.
My own philosophy has always run the other way. For years, I've tried to buy fewer, high-quality things rather than cheap T-shirts that look dingy after a few washes.
Different habits, same math. Every T-shirt, and every pillowcase, has a price and a number of nights. Cost per night is just the honest way to put the two together.
Where does the price of a silk pillowcase go?
How much silk is in it (momme)
Momme measures the weight of silk per area. More momme means more raw silk in every pillowcase, and raw silk is the expensive part. The unit is explained in what momme weight means.
How good the fiber is (grade)
Grade, such as 6A, describes the quality of the raw silk filament. Higher grades cost the mill more. Grading is an industry convention rather than a regulated standard, so read it alongside the other specs. More in what Grade 6A silk means.
Independent testing and certification
An OEKO-TEX or GOTS certificate means someone outside the company tested or audited the product. It's also the one cost you can verify yourself, by looking up the number.
Construction
Finished seams, a well-set zipper, a second layer of silk, even stitching at the corners. All of it takes time and material, and none of it shows up in a product photo. If you're wondering what a second layer adds, see what a double-lined silk pillowcase is.
What gets cut first when a silk pillowcase is too cheap?
When a "silk" pillowcase costs far less than its claimed specs would reasonably cost to make, something on that list was skipped. Usually it's one of these:
- The fiber. "Silk" gets used loosely, and satin, which is a weave and usually polyester, stands in for it.
- The momme. Less silk, not always disclosed.
- The certificate. Usually just absent.
- The construction. It shows up later, at the corners and seams.
To check the fiber yourself, how to tell real silk from fake walks through it.
Does a more expensive silk pillowcase last longer?
Nobody can promise you a number of years, and I won't. What's true is simple: higher-momme silk has more fiber per square meter, so there's more fabric to wear through. How long any pillowcase lasts still depends on how you wash and dry it, which is covered in how to make a silk pillowcase last longer.
Is paying more for a silk pillowcase worth it for you?
Paying more makes sense if you want a certificate number you can look up, more silk per square meter, a second layer or a zipper, and you know you're paying for them. Paying less makes sense if you want a smooth surface and don't need silk's fiber, or if you're buying several pillowcases for a household. A lower-priced pillowcase with a stated momme and a certificate number you can look up is a reasonable choice.
If the bigger question is whether silk is worth it at all, read whether a silk pillowcase is worth it.
Why does a Wink pillowcase cost what it costs?
I'll hold our price to the same breakdown. Every Wink piece is Performance Luxury Silk™: 25 momme, Grade 6A, 100% mulberry silk charmeuse, crafted by a GOTS & OEKO-TEX certified silk house. Here's what Performance Luxury Silk means.
- Douceur™, $185: the single-layer pillowcase.
- Douceur Doublure™, $245: two layers in Coy™. The founding edition is 330 hand-numbered pieces, never restocked.
The pillowcases are tested under OEKO-TEX Standard 100 certificate 22.HCN.30712, Product Class I, and the silk house's GOTS license is 00284622. Wink Silk is pursuing its own GOTS and OEKO-TEX certifications. Every number is on our certifications page.
The price is the price, every day. Here's why Wink Silk doesn't run sales. Pillowcases are queen only for now, shipping is free in the US, and returns are free for 30 days. Founding orders are pre-sale: ship date confirmed by email after purchase, and you can cancel for a full refund any time before it ships.
A cheap pillowcase and an expensive one can both be bad deals, for different reasons. Read the specs, look up the certificate, and divide by the nights.
If you'd like to be there when we open, join Wink Privé, our free membership. It opens November 2, three days before everyone else.
Wink. The brand that shows you the certificates.
Sleep beautifully.
Sources
- Units of textile measurement: momme (Wikipedia)
- Silk Reeling and Testing Manual, Chapter 11: Raw Silk Testing (FAO)
- Satin (Britannica)
- OEKO-TEX Label Check
Douceur™ is $185 and Douceur Doublure™ is $245, both 25 momme, Grade 6A mulberry silk, with free US shipping and 30-day returns.
Frequently Asked Questions
What is the real cost of a silk pillowcase?
The price divided by the nights you use it. If a $185 pillowcase lasts two years, that's about 25 cents a night. If a $245 one lasts two years, about 34 cents. How long any pillowcase lasts depends on the silk and on how you wash it, so run the math with your own estimate.
Why are silk pillowcases so expensive?
The price reflects how much silk is in the fabric (momme), the quality of the fiber (grade), independent testing or certification, and construction such as finished seams, zippers and extra layers. When a pillowcase claims all of those at a very low price, one of them was usually skipped, most often the fiber itself.
How do I work out the cost per night of a pillowcase?
Divide the total you spent, including any replacements, by the number of nights you use it. For one year, divide by 365. For two years, divide by 730. Compare two options side by side using your own habits, not a brand's promise.
Is a cheap silk pillowcase worth it?
It can be, if it's actually silk, states its momme and has a certificate number you can look up. It isn't if the fiber is unclear or the listing gives no specs. If you've replaced cheap pillowcases before, add those prices together when you work out what you really spent per night.
Is satin a cheaper alternative to silk?
Satin is a weave, not a fiber, and most satin pillowcases are polyester. It gives a smooth surface at a lower price, which is a fair choice if that's what you want. It isn't silk, so check the fiber content on the label to know which one you're paying for.
