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Choosing a 16 Momme Mulberry Silk Pillowcase, A Practical Buyer's Guide
The problem with your current pillowcase
Most pillowcases are cotton. Cotton is fine, it washes well and it is cheap, but it has a texture. Run your hand across a cotton case and you can feel the weave catching slightly. Now do the same with silk and your hand keeps going.
That difference in friction is the whole reason silk pillowcases exist. When you turn over in the night, your hair and the side of your face drag across the fabric. On a rougher weave there is more pull. On silk there is less. That is a straightforward property of the fibre, nothing mysterious about it.
The other thing people notice is temperature. Silk feels cool when you first lie down. It does not stay icy, it settles, but that first contact is pleasant on a warm night and it is one of the reasons silk sticks around once people try it.
What 16 momme actually tells you
Silk is sold by momme, written as mm, which measures the weight of the fabric. It is roughly the equivalent of GSM for towels or thread count for cotton sheets, in that it gives you a sense of substance.
Lightweight silk starts around 12 momme and feels thin, almost like a scarf. At the other end, 25 momme and above is dense and heavy, closer to a furnishing fabric, and the price climbs with it. Sixteen momme sits in the middle and that is deliberate. It is light enough to drape softly over a pillow, heavy enough to feel like proper fabric, and it holds up to regular washing without becoming fragile.
This case is 16 momme on both sides. That both-sides detail matters more than it sounds. Plenty of budget cases put silk on the face and something else entirely on the back. Here there is no wrong way up.
The maker also lists a 600 thread count for the weave. Thread count means less for silk than it does for cotton, but a high figure does point to a close, even surface, which is what produces that characteristic slip.
The size question, and why you should measure
The case is 50 x 75 cm, which converts to 20 x 30 inches. That is the UK standard, and it matches the pillows that come with most British bedding sets.
Even so, measure your pillow. It takes ten seconds and it saves a return. Lay the pillow flat, measure across the front from seam to seam, and check the depth too. Standard UK pillows will be fine. The ones that cause trouble are memory foam blocks, contour pillows with a wave profile, and some of the deeper hotel-style pillows that are closer to a square. A case cut for 50 x 75 cm will not stretch to fit those.
If your pillow comes out slightly smaller than the case, that is workable. You end up with a little loose fabric at each end, which the zip holds neatly in place. If it is bigger, it will not go on without strain, and strain on fine silk is how seams give way.
Why the hidden zip earns its place
Pillowcase closures come in a few styles. Envelope flaps tuck the pillow in behind an internal fold. Oxford borders add a decorative frame. Zips do exactly what they say.
A zip has one clear advantage. The pillow cannot work its way out. Envelope flaps are tidy when you make the bed and considerably less tidy by morning, especially if you move around. With a zipped case the pillow stays fully enclosed from the moment you close it.
The zip here is hidden, sitting inside the seam rather than sitting proud of the edge. You will not see it when the case is on the bed, and because it runs along the edge rather than across the sleeping surface, most people never feel it. If you are sensitive to that sort of thing, point the zipped edge away from where your face lands.
One small habit worth forming: close the zip before the case goes in the wash. An open zip can snag the fabric as it tumbles.
The case for a darker colour
Silk bedding is usually sold in ivory, champagne, blush and silver. Those look lovely and they also show every trace of a night cream or a bit of hair product.
Coffee brown goes the other way. It is a solid, warm dark brown with no print, and it hides the everyday marks that pale silk announces. It also looks more considered than you might expect. Against cream or oatmeal bedlinen it works as a deliberate accent. With grey or charcoal it reads as a warm note in a cool scheme. And it sits naturally alongside oak and walnut furniture, which covers a lot of British bedrooms.
The one thing to watch with any dark dye is sunlight. Dry it in the shade and it will keep its depth far longer.
Washing it without worry
Silk has a reputation for being difficult. In practice this case is not much more demanding than a good cotton one.
Machine wash it on the gentlest cycle your machine offers, in warm water, using a mild detergent made for delicates. A mesh laundry bag is worth the small outlay, as it keeps the case from twisting around other items and protects the zip. If you would rather hand wash, a sink of warm water and a few minutes of gentle swishing does the job.
Then air dry. Lay it flat or hang it somewhere with good airflow, out of direct sun. Silk dries quickly, usually faster than cotton. Skip the tumble dryer, since the heat is the main thing that damages fine silk over time.
Three things to avoid: bleach, hot water, and fabric softener. Bleach attacks the fibre, hot water encourages shrinkage, and softener leaves a film that dulls the surface you paid for in the first place.
If creases bother you, a cool iron on the reverse side while the fabric is slightly damp sorts them out. Many people skip ironing altogether, since the case smooths out once it is on the pillow.
Weekly washing suits most people. If you use rich night creams or leave-in hair products, go more often.
Who this suits
People with long hair tend to be the first converts, because the reduced friction is most obvious when there is more hair to drag. Anyone who sleeps warm often prefers silk to cotton for the cool first contact. And if you have been eyeing silk bedding but found a full set hard to justify, a single pillowcase is the sensible entry point. It is the part of the bed your face is actually touching.
It also makes a straightforward gift. It arrives in a gift box, so there is no wrapping to do, and it is the sort of thing people enjoy receiving but rarely buy for themselves.
The one group it does not suit is anyone with a non-standard pillow. Check the measurements first.
Buying one or two
Each order is a single pillowcase. If you sleep on a double or king bed and want both sides matching, order two. They come from the same fabric and the same dye, so a pair looks consistent rather than almost-matching.
Some people buy one to try, then a second once they are sure. That works too, though colours can shift slightly between production runs, so ordering together is the safer route if an exact match matters to you.
The short version
This is a single pillowcase in 100% mulberry silk on both sides, woven at 16 momme with a 600 thread count listed by the maker. It measures 50 x 75 cm, the UK standard, and closes with a hidden zip so the pillow stays put. The colour is a solid coffee brown with no print, and it arrives in a gift box.
Measure your pillow before you order. Wash it gently and dry it in the shade. Delivery is tracked from UK warehouses in 3 to 7 working days, and you have 14 days from delivery to cancel if it is not right.