SILKSILKY 19 Momme Mulberry Silk Pillowcase Review: What the Momme Number Actually Buys You

I work with textiles, and silk bedding is the category where consumers are most reliably misled — not by outright lies, but by numbers presented without context. Every listing says "100% mulberry silk." Almost none explain that this phrase says nothing about quality, because mulberry silk spans an enormous range of weights and grades, and the price difference between the bottom and the top of that range is several hundred percent.

The SILKSILKY envelope pillowcase is worth writing about because its listing gives you the two numbers that actually matter: 19 momme and 6A grade, at $21.95. Once you understand what those mean, the buying decision becomes straightforward.

Specifications at a glance

Twenty-two dollars for a single 19-momme pillowcase is competitive rather than cheap, and the "one pillowcase only" note is the detail most people miss. Colours, sizes, the zipper closure option and the wider silk sleepwear range are on the official SILKSILKY store.

What this SILKSILKY pillowcase gets right

19 momme is the right weight for a pillowcase

Momme measures the weight of silk, and for pillowcases the practical range runs from about 16 to 25. Below 19 the fabric is noticeably thin, snags easily and wears through at the seams within a year or two. Above 22 you are paying for durability and drape you will not perceive on a pillow. Nineteen momme is the sweet spot the industry has largely converged on, and SILKSILKY stating it plainly is a good sign — many listings simply do not.

6A grading refers to the raw filament, not the finished cloth

Silk is graded from 1A to 6A based on the length, uniformity and cleanliness of the reeled filament. 6A is the top grade, meaning long, even, unbroken fibres. In practice this shows up as a smoother surface with fewer slubs and better resistance to pilling. It is a supply-chain specification rather than a marketing adjective, and combined with the momme figure it tells you most of what you need.

The friction argument is the honest one

The claims worth taking seriously here are mechanical, not cosmetic. Silk has a much lower coefficient of friction than cotton, so hair slides across it instead of catching — which genuinely does reduce overnight tangling, frizz and mechanical breakage, and genuinely does reduce the creasing that cotton presses into skin. Those are physical properties of the fibre, not a formulation claim.

The sizing table is unusually thorough

Bedding sizing is a mess across markets, and a US Queen pillowcase is a UK Standard. SILKSILKY publishes a cross-referenced table covering the US, Canada, Singapore, Australia, the UK, Spain, France, Sweden and Italy in both inches and centimetres. That is genuinely useful, and it prevents the single most common return in this category.

Envelope closure is the practical choice

An envelope closure has no zipper to press into your face and nothing to fail in the wash. A hidden zipper option exists if you prefer a firmer fit for a very full pillow.

Three things I would change

1. Silk is genuinely high-maintenance, and this is where buyers regret it

Silk is a protein fibre. It does not tolerate hot water, ordinary biological detergent, bleach, fabric softener or a tumble dryer — biological detergents contain protease enzymes that digest the fibre itself. Realistically you are hand-washing or using a delicate cycle in a mesh bag with pH-neutral detergent, then line drying out of sunlight. If that is not a routine you will actually maintain, a 19-momme pillowcase will look tired within months and the money is wasted.

2. The "anti-mite and allergy-friendly" claim needs qualifying

Silk’s tight weave is less hospitable to dust mites than loose cotton, and the fibre itself is not a common allergen. But this is not a certified barrier fabric and should not be treated as an allergy intervention. If you are managing a genuine dust-mite allergy, encasements tested to a recognised standard are the appropriate product, and this is a comfort upgrade alongside them rather than a substitute.

3. One case, and colour is a long-term commitment

The listing price covers a single pillowcase, so a standard double bed is a $43.90 purchase, not a $21.95 one. Silk also takes dye differently from cotton and darker colours can transfer slightly on the first few washes, so wash new dark cases separately. Neither point is a flaw exactly — but both are places where the real cost is higher than the headline.

Who should buy it — and who should skip it

Buy it if

• You have long, curly, textured or chemically treated hair and wake up with tangles or frizz — this is the use case where silk is most demonstrably worth it.
• You get sleep creases on your face and want a low-effort intervention.
• You are willing to hand-wash or run a genuine delicate cycle, and you understand silk is a maintained textile.

Skip it if

• Everything you own goes in one hot wash — silk will not survive your laundry routine and cheaper satin polyester is the honest recommendation instead.
• You are buying it as a medical allergy intervention.
• You need certified barrier bedding or expect the price shown to cover a pair.

The verdict

This is a well-specified product at a fair price. Nineteen momme and 6A grading are the two numbers that separate real silk bedding from marketing, SILKSILKY publishes both, and the international sizing table is better than most of the industry manages. At $21.95 per case it is priced where a 19-momme 6A pillowcase should be. The deciding question is not quality, it is you: silk rewards care and punishes neglect, and the single biggest predictor of whether this purchase is worth it is whether you will actually wash it properly. If yes, buy two. If not, buy something else.

Check sizes, colours and current pricing at SILKSILKY — remember the price shown is for a single case, so double it if you sleep with two pillows.

More offers, coupons and current promotions from this brand are collected on our silksilky store page.

Disclosure: this article contains affiliate links. If you buy through them, GoSmartReview may earn a commission at no extra cost to you. Prices and specifications were taken from the official silksilky store on 31 August 2026 and can change at any time.