
Best for: The buyer who wants full-weight mulberry silk with a zipper, prefers buying direct with a real return window, and does not need Amazon delivery speed.
A 23-momme 6A mulberry case with a hidden zipper, sold direct with free US shipping and a 60-day return window — the Slip and Blissy weight class at ZIMASILK money.
Promeed is a silk-only house out of Spokane that sells direct rather than through Amazon. The pillowcase is 23-momme 6A mulberry silk on both sides — a hair above the 22-momme standard that Slip, Blissy and ZIMASILK share — closed with a hidden zipper and shipped with a mesh laundry bag so it can go in the machine on a cold delicate cycle. It carries OEKO-TEX Standard 100 certification and comes in Standard, Queen and King in a wide colour range. Because you buy from the brand, returns are 60 days and free by mail — longer than the usual marketplace window. The trade-offs: no Prime-speed delivery, a review base that lives on Promeed's own site rather than a marketplace, and the '6A+' grading is Promeed's label — 6A is the top industry grade and the plus is marketing.
Prices shown were last checked on 2026-09-17 and can change at any time — the price on the retailer's site at checkout is the one that applies. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
We show the price at our recommended retailer as at our last check of that offer (2026-09-17) and the manufacturer's list price for comparison. Retail prices — Amazon's especially — move constantly, so treat these as a guide: the price shown on the retailer's own page at checkout is the one that applies. Tap through to see each retailer's current price.
How our 8.1/10 breaks down — rated on the dimensions that matter most for silk pillowcases, from published specifications and third-party test data, not the marketing.
Quick verdicts for the silk pillowcases most often considered alongside the Promeed 23 Momme Mulberry Silk Pillowcase with Zipper (Queen).
The value sweet spot — genuine 22-momme silk on both sides with a hidden zipper for around $37, the same premium spec the beauty brands sell for far more.
→ The value-minded buyer who wants real 22-momme silk — the same weight as Slip and Blissy — without paying for a brand or a marketing campaign.
The internet's default — the most-reviewed silk pillowcase there is, with a hidden zipper, OEKO-TEX cert and a 60-night guarantee that makes trying it risk-free.
→ The first-time silk buyer who wants a safe, proven pick with a real return window and a color to match every bedroom.
The silk-specialist's pick — pure 22-momme from a dedicated silk house, the quality-first choice without a beauty-brand logo tax.
→ Silk purists who want quality over brand name
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Marginally. Momme is silk density; 22 is the weight most premium cases use, and 23 is one step heavier — slightly more silk per square metre, which shows up as a touch more body and durability rather than a different feel. It is not a reason to pick Promeed over a 22-momme case on its own; the zipper, the certification and the return terms are.
Similar money for similar silk. ZIMASILK is 22 momme sold on Amazon with Prime delivery; Promeed is 23 momme sold direct with free shipping and a 60-day free return window. If you want it in two days, ZIMASILK. If you want the longer return window and the certification on paper, Promeed.
Both are 22–23 momme 6A mulberry with OEKO-TEX certification. Blissy charges noticeably more for the bigger brand name; Promeed matches the spec, adds a slightly heavier weave and buys you the direct 60-day return terms for less. Pay for Blissy only if the name matters to you.
Yes — cold water, delicate cycle, inside the mesh bag that ships with it, with a silk-safe detergent, then air dry. That is Promeed's own care guidance, and it is friendlier than the hand-wash-only instruction on some competitors.
6A is the highest standard grade for mulberry silk thread. The plus sign is Promeed's own label, not an industry tier — treat it as 6A. That is still the same grade Slip, Blissy and Mulberry Park quote.