Mulberry Silk Company
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Black Single Layer Silk Bonnet | Mulberry silk sleep cap | adjustable silk bonnet

Black Single Layer Silk Bonnet

£39.99 £47.99 Save £8
  • 100% Mulberry Silk
  • Single Thin Layer
  • Extra Large Fit
  • Elastic And Tie

Price: £39.99 £47.99

  • Free tracked delivery across the UK on orders £100+, otherwise a flat £12
  • Pay by card or PayPal, handled by the payment provider
  • 14 days to change your mind, plus your statutory rights
Product specifications
Material100% mulberry silk
ColourBlack, solid
Closure TypeElastic and tie
LayersSingle
FitExtra large, suitable for long or thick hair
CareHand wash only
Shipping & returns

Tracked delivery anywhere in the UK. It is free on orders of £100 or more, and a flat £12 below that.

Under the Consumer Contracts Regulations 2013 you have 14 days from delivery to cancel for any reason, and a further 14 days to send it back in resaleable condition. We refund the price you paid, including standard delivery. You cover the cost of returning it unless the item is faulty.

If it arrives faulty, damaged or not as described, we put it right at no cost to you under the Consumer Rights Act 2015, return postage included.

Shipping details · Refunds and returns

100% Mulberry SilkOne smooth fabric against your hair all night.
Single Thin LayerLighter on the head than a double-layer bonnet.
Extra Large FitRoom for long hair, thick hair, braids or locs.
Elastic And TieAdjust the edge so it stays put while you move.

A black single layer silk bonnet that keeps hair tucked away in smooth mulberry silk from the moment you switch the lamp off.

Made from 100% mulberry silk in one thin layer, cut extra large for long or thick hair, and held in place by an elastic edge with a tie you can adjust yourself.

A black single layer silk bonnet made from 100% mulberry silk, cut generously so long or thick hair can be tucked in without being squashed.

The single thin layer sits lightly on the head, which many people prefer over a heavier double-layer bonnet in warm weather.

An elastic edge holds the bonnet in place and a tie lets you set the tension yourself rather than relying on a fixed band.

Hair and skin slide over silk with less friction than they do over cotton, so the bonnet keeps a style tucked away neatly overnight.

A matching scrunchie is shown with the bonnet, so you can tie hair back in the same fabric before you put the cap on.

Black Single Layer Silk Bonnet

This is a plain black bonnet made from 100% mulberry silk, built as a single thin layer rather than the lined, double-layer style you often see. That one decision changes how it feels. There is less bulk sitting on top of your head, less heat trapped underneath, and the fabric drapes closer to the shape of your hair. If you have tried a padded bonnet and found it hot or heavy, a single layer is the version worth trying next.

Black Single Layer Silk Bonnet

The cut is extra large on purpose. Long hair, thick hair, braids, twists and locs all need somewhere to go, and a small cap either squashes everything flat or slides off in the night. Here there is room to gather hair loosely and tuck it up inside without pressing it against the scalp. A loose gather tends to hold a style better than a tight one, because the hair is not being creased into a single fold for hours.

Fit is handled in two ways. An elastic edge runs around the opening to keep the bonnet on, and a tie lets you draw it in or let it out depending on how much hair you have put inside and how firm you want it. That matters more than it sounds, because elastic alone is a compromise. Too tight and it marks your forehead, too loose and it comes off. With a tie you set the tension yourself, and you can change it on a night when you have washed and conditioned and your hair takes up more space.

Silk is a smooth fibre, so hair and skin slide across it with less friction than they do across cotton. Cotton pillowcases and cotton caps have a rougher surface, which is why hair tends to catch and move around on them. A silk bonnet gives your hair a slippery surface to sit against all night. The colour here is a solid black with no print or pattern, which is the easy choice if you want something that does not shout.

A matching scrunchie appears alongside the bonnet in the photographs. The usual way to use it is to gather hair back loosely first, then put the bonnet over the top. Care is simple but strict, hand wash only in cool water, dry flat, and keep it away from heat. Treated that way, a silk cap stays smooth rather than going stiff and dull.

Not sure yet? That is fine.

Silk is something you judge by touch, and you cannot do that through a screen. Under the Consumer Contracts Regulations 2013 you have 14 days from delivery to cancel for any reason, and a further 14 days to send it back in resaleable condition. We refund the price you paid, including standard delivery.

If it turns up faulty, damaged or not as described, that is on us. The Consumer Rights Act 2015 covers you, and we pay the return postage. Read the full detail on our refunds and returns page, or ask us anything before you order.

Frequently Asked Questions

What exactly is this product?

It is a sleep bonnet made from 100% mulberry silk, in a solid black colour. You put it on before bed to keep your hair gathered and sitting against silk instead of your pillow or a cotton cap.

What does single layer mean here?

Many bonnets are built from two layers of fabric, often with a lining and sometimes padding. This one is a single thin layer of silk, so there is less bulk and less weight sitting on your head.

Is a single layer better than a double layer?

It depends what you want. A single layer is lighter and cooler, which suits warm bedrooms and anyone who dislikes the feeling of something heavy on their head. A double layer holds its shape more firmly, so the best silk bonnet for you comes down to preference.

Will it fit long hair?

Yes, it is cut extra large with long and thick hair in mind. You gather your hair loosely and tuck it up inside rather than forcing it flat, which is what a smaller cap makes you do.

Does it work for braids, twists or locs?

The extra large cut is the reason people look for this style, because braids and locs take up a lot of room. Gather them gently and tuck them inside, then adjust the tie so the bonnet sits secure without pulling.

How does it stay on?

There is an elastic edge around the opening plus a tie. The elastic does the basic holding and the tie lets you tighten or loosen the fit for the night.

Can I adjust the tightness?

Yes, that is what the tie is for. Pull it in if the bonnet feels loose, let it out on nights when your hair is freshly washed and takes up more space. An adjustable silk bonnet is far more forgiving than one with fixed elastic.

Will the elastic leave a mark on my forehead?

Set the tie so the bonnet is secure but not gripping. If you can slide a finger under the edge comfortably, the tension is about right and marks are much less likely.

What size head does it suit?

It is made in an extra large cut, so it suits most adult head sizes and leaves spare room for hair volume. The maker does not state a measured circumference.

What are the exact dimensions?

The maker does not state measurements for this bonnet. What is stated is that the cut is extra large and intended for long or thick hair.

What is the momme weight of the silk?

The maker does not state a momme weight. The description given is 100% mulberry silk in a single thin layer.

What colour is it?

It is a solid black with no print or pattern. Black is the usual choice for anyone who wants a cap that does not stand out if someone sees it.

Is a scrunchie included?

A matching scrunchie is shown in the photographs with the bonnet. Many people use it to tie hair back loosely first, then put the bonnet over the top.

How is silk different from a cotton cap?

Silk has a smoother surface, so hair slides across it with less friction than it does across cotton. Cotton catches more, which is why hair tends to shift around and bunch under a cotton cap.

Can I wear it with wet hair?

It is better to let hair dry most of the way first. Trapping very wet hair under any cap keeps it damp for hours, and the silk will take longer to dry out afterwards too.

Can I use hair oils or cream underneath?

You can, but oils transfer into the fabric and will mean washing the bonnet more often. If you use a lot of product, consider a second cap so one can be drying while the other is in use.

How do I wash it?

Hand wash only, in cool water with a small amount of mild detergent made for delicate fabrics. Do not wring it, press the water out with a towel, then reshape and dry flat.

Can I put it in the washing machine?

No. The care instruction is hand wash only, and machine agitation is hard on fine silk even inside a mesh bag.

Can it go in the tumble dryer?

No. Heat is the quickest way to make silk stiff and dull. Dry it flat, in the air, away from radiators and direct sun.

How often should I wash it?

Every week or two is a reasonable rhythm for most people. Wash more often if you use heavy oils or creams, less often if you wear it over dry, product-free hair.

Can I iron it?

If it needs pressing, use the coolest iron setting and go over the reverse side. Most of the time, smoothing it flat while damp and letting it dry is enough.

Will the black colour run?

Wash it on its own the first few times and use cool water, which is good practice for any dark dyed silk. Avoid soaking it for long periods.

Is it suitable for men?

Yes. The cut is unisex and plain black, and it is a common choice for anyone with longer hair, braids or locs who wants them contained overnight.

Can children wear it?

It is sized as an adult extra large, so it will be loose on a child. For younger children, keep an eye on fit and ties as a general matter of common sense.

Will it slip off during the night?

The elastic edge plus the tie is designed to stop that. If it has slipped in the past with other caps, draw the tie in a little further and make sure hair is tucked right inside before you lie down.

Can I wear it for a daytime nap or around the house?

There is nothing stopping you. A lightweight silk sleep cap is just as useful for an afternoon rest or for keeping a set style protected while you potter about.

Does it work over a silk pillowcase too?

They work well together. The bonnet keeps the hair itself contained and the pillowcase gives a smooth surface for your face and any hair that escapes.

Does it make a good gift?

It does. Black suits everyone, the extra large cut removes most of the sizing guesswork, and a silk bonnet and scrunchie set presents nicely without needing wrapping fuss.

How long does delivery take?

Orders are sent tracked from UK warehouses and usually arrive within 3 to 7 working days. You will get tracking details once the parcel is on its way.

What if it is not right for me?

You have 14 days from delivery to cancel for any reason under the Consumer Contracts Regulations. Keep the bonnet unworn and in its packaging if you think you may send it back, then contact us and we will talk you through the return.

How To Choose A Silk Bonnet That Actually Stays On

6 min read Mulberry Silk Company

The problem with waking up to flattened hair

You go to bed with your hair looking fine. Eight hours later it has been dragged across a pillowcase a few hundred times, pushed into odd shapes, and the curls or the blow-dry you were pleased with have gone. Nothing dramatic happened. Your head just moved, and the pillow did not let your hair move with it.

That is friction. Cotton bedding has a rough surface at the fibre level, and hair catches on it. Each small catch pulls a strand sideways, out of place, and into the tangle it was not in when you lay down. Add a cotton cap into the mix and you have swapped one rough surface for another.

A silk bonnet solves this by changing what your hair sits against. Silk is smooth, so hair slides over it rather than snagging. Put the hair inside a cap and you also stop it being spread across the bed in the first place. The two things together are the whole point.

What a single layer changes

Most bonnets you see online are built from two layers. There is an outer fabric, a lining, and sometimes a bit of padding in between to give the cap a rounded shape. That construction holds its form nicely and looks substantial in photographs.

It also sits heavier on your head, and it holds heat.

This bonnet takes the other approach. One thin layer of 100% mulberry silk, nothing behind it. The fabric drapes down against the shape of your hair instead of hovering above it in a dome. It weighs almost nothing. In a warm bedroom, or in summer, the difference is noticeable within minutes of putting it on.

The trade-off is honest. A single layer does not hold a sculpted shape the way a lined bonnet does. If you want a cap that sits up like a chef's hat regardless of what is underneath, this is not that. If you want the lightest thing you can put between your hair and the pillow, it is.

Why the extra large cut matters more than you think

Size is where most bonnets fall down for people with a lot of hair.

Picture what happens when you push long hair or a set of braids into a cap that is too small. The hair has nowhere to go, so it gets pressed flat against the scalp and folded into whatever space is left. You wake up with a crease where the edge of the bonnet sat, and the volume you had is gone. The cap did its job on friction and failed on everything else.

An extra large cut gives the hair somewhere to sit. You gather it loosely, let it coil or pile naturally, and tuck the whole lot up inside. Nothing is being compressed. In the morning the shape is still roughly the shape you went to bed with, which is what people actually want from the best silk bonnet for long hair.

This matters for braids, twists and locs in particular, because those take up real volume and do not squash down the way loose hair does. If you have been finding caps too tight across the back of the head, that is a sizing problem rather than a silk problem.

Elastic, tie, or both

Three ways of fastening a bonnet exist and they are not equal.

Elastic alone is the cheapest and the most common. It works until it does not. Too tight and you wake up with a line pressed across your forehead. Too loose and the cap is on the floor by three in the morning. Elastic also tires out, so a cap that fitted well in month one may be slack by month six.

A tie alone gives you full control but takes more fiddling, and a knot sitting against the back of your head is not comfortable for everyone.

This bonnet uses both. The elastic edge does the basic work of holding the cap against your head, and the tie lets you set the tension on top of that. On a night when your hair is freshly washed and conditioned, and taking up more room than usual, you let the tie out. On a night when you want it firm because you move around a lot, you pull it in. That flexibility is why an adjustable silk bonnet tends to still be in use a year later, while a plain elastic one gets abandoned.

A quick fitting tip. Once it is on, slide a finger under the edge. If it goes in easily but the bonnet does not shift when you turn your head, you have the tension right.

Who this suits

People with long hair who are tired of untangling it every morning. People with curls or coils who want to keep a style going for a second and third day. Anyone with braids, twists or locs that need containing overnight. People who sleep warm and have given up on padded bonnets because they felt like wearing a hat to bed.

It also suits anyone who wants something plain. Solid black, no print, no logo across the front. If you share a house, or you travel, or you simply do not want a bright patterned thing on your bedside table, black is the practical pick.

Who it suits less well. If you want a stiff, structured cap that keeps a defined dome shape, a double-layer bonnet does that better. And if you have very short hair, you may find a full-size cap more fabric than you need, though plenty of people with short hair still like one for keeping a fresh cut tidy.

How to look after it

Silk rewards gentle handling and punishes shortcuts, and the rules here are short.

Hand wash only. Cool water, a small squeeze of a detergent made for delicate fabrics, and a few minutes of light swishing. Do not scrub, do not wring, do not twist it into a rope to get the water out. Lay it on a towel, roll the towel up, press, then unroll and reshape the bonnet while it is damp.

Dry it flat, in the air, away from radiators and away from direct sunlight. Heat is what turns soft silk stiff and dull, and a tumble dryer will do that faster than anything else.

Wash it every week or two as a rough guide. If you use oils or rich creams on your hair at night, those transfer into the fabric and you will want to wash more often. Some people buy two caps for exactly that reason, so one can dry while the other is in use.

Wash it on its own for the first few goes, since it is a dark dyed fabric. If it needs pressing after drying, the coolest iron setting on the reverse side is enough.

Using it with the rest of your routine

A bonnet and a silk pillowcase do different jobs. The bonnet contains the hair. The pillowcase gives a smooth surface for your face, your neck, and any strands that work their way out. Using both is not overkill, it is just covering two different contact points.

The matching scrunchie shown with the bonnet has a role too. Tying hair back loosely before the cap goes on stops it unravelling inside and makes it easier to gather everything in one go. Loose is the key word. A tight band at the back of your head for eight hours creates its own crease.

If you are protecting a specific style, put the bonnet on while the style is still set rather than after you have been lounging about in it for an hour.

The short version

This is a plain black cap in 100% mulberry silk, built as one thin layer so it stays light on your head. It is cut extra large so long hair, thick hair and braids have room to sit without being squashed. An elastic edge plus a tie means you set the fit yourself, which is the difference between a bonnet that stays on and one that ends up under the bed. A matching scrunchie comes with it. Hand wash only, dry flat, keep it away from heat.

If you sleep warm, or you have tried a padded bonnet and found it too much, this is the lighter version of the same idea.

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Page summary

The Black Single Layer Silk Bonnet is a sleep cap made from 100% mulberry silk in a solid black colour with no print. Unlike double-layer bonnets, it uses a single thin layer of silk, which makes it lighter on the head. The cut is extra large, giving room for long hair, thick hair, braids or locs. It fastens with a combination of an elastic edge and an adjustable tie, so the wearer can set the tension rather than relying on fixed elastic. A matching scrunchie is shown with it. Care is hand wash only. Momme weight, exact measurements, weight and country of origin are not stated by the maker. Silk is smooth, so hair slides over it with less friction than over cotton.