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Bed bug proof duvet encasement with a full zip seal, eucalyptus silk
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Bed Bug Proof Duvet Protector | Full Zip Encasement, Eucalyptus Silk

  • Clinically Proven Dust Mite Protection
  • Fast Next-Day UK Delivery Available
  • 30-Day Money-Back Guarantee
£139.00

Seal bed bugs inside your duvet, or keep them out for good.

A duvet cover is washed weekly, but bed bugs live in the duvet filling underneath it, and most duvets cannot be washed hot enough or often enough to clear them. This full-zip encasement wraps the entire duvet. Bugs already inside are trapped and starved, and new ones cannot get in. Your own duvet cover goes on top as normal.

  • Fully zip sealed with a zip that closes to an end stop, no gap
  • 5 micron barrier. A bed bug egg is roughly 500 microns, so nothing gets through
  • Corner ties hold the duvet in place so it never bunches
  • Soft eucalyptus silk, breathable, no crinkle, no heat build-up
  • OEKO-TEX certified and chemical free
  • Also blocks dust mites and their allergens, so it keeps working after the bed bugs are gone
  • Free UK next-day delivery on orders over £149, 1 year warranty

How to use it during an infestation

  1. Remove and wash your duvet cover at 60°C.
  2. Fit the encasement over the bare duvet, tie the corners, and zip it fully to the end stop.
  3. Put your duvet cover back on top.
  4. Leave the encasement zipped for at least 12 months. Bed bugs can survive many months without feeding.

Which size?

Match the size to your duvet, not your mattress. Cot Bed 120 x 150, Single 135 x 200, Double 200 x 200, King 225 x 220, Super King 260 x 220cm.

Do not stop at the duvet

Bed bugs hide in the mattress seams and pillow filling too. The Bed Bug Protector Set seals the mattress, both pillows and the duvet in one order and costs far less than buying the three separately.

Need help choosing? Call us on 0330 122 1646.

Why Pick iDustMite?

At iDustMite®, everything we do is designed for people with dust mite allergies.

Not some people. Not most people. You.

From the first design sketch to the final stitch, our dust mite pillow protectors, duvet protectors, and mattress encasements are made with one clear goal — to help dust mite allergy sufferers sleep in a cleaner, calmer bed.

Because when bedding is designed for dust mite allergies from the start, nothing important gets missed:


Precision stitching to reduce weak points where allergens can escape

Sealed zip closures for full pillow, duvet, and mattress encasement

Dust mite-proof materials designed to help keep allergens trapped inside

Science-Backed Proof & Certifications

We openly show how our products are tested — many bedding brands do not.

Our dust mite pillow, duvet, and mattress protectors are independently tested by Shirley®, a respected UK laboratory known for textile performance and barrier testing.

Certified safe materials

All iDustMite® fabrics are OEKO-TEX® certified, meaning they are tested for harmful substances and are suitable for both adults and children, including those with sensitive skin.

Designed to block dust mites at the source

Our encasements are engineered with a ~5 micron dust mite barrier, designed to help block dust mites and their allergens from escaping the bedding — where exposure most often happens.

You can view our independent lab testing and certifications in full here:

👉 https://idustmite.com/pages/science-certifications-dust-mite-proof-bedding-by-idustmite?ose=false

This focus on transparent testing, material safety, and purpose-built design is why iDustMite® is made specifically for dust mite allergy sufferers — not a one-size-fits-all bedding solution.

Why eucalyptus silk is best for dust mites

Eucalyptus silk naturally helps repel dust mites by reducing the warm, damp conditions they need to thrive.

It has excellent moisture-wicking and breathability, helping keep bedding drier throughout the night.

Our 1,000 thread count eucalyptus silk, woven in a tight percale weave, creates a dense fabric structure that helps block dust mites while staying smooth and gentle on sensitive skin.

How It Works

One sealed barrier protecting you from millions of dust mites, through multiple layers of protection:

Zip the mattress protector around your mattress to seal the mites away.

The tight weave blocks allergens from passing through.

Without a food source, mites die off naturally.

Wash at 60°C monthly to remove any residue.

Doctors Recommend

FAQs.

Everything you need to know about dust mite protection.

Most solutions treat the symptoms, not the cause. Dust mites live inside your mattress, pillow and duvet, and sprays or antihistamines can't reach them there. Our encasements physically seal your bedding with a precision zip, blocking 99.97% of allergens from reaching you every night. It is a permanent fix, not a workaround.

Yes. Those symptoms are caused by allergens you breathe in while you sleep. By sealing your mattress, pillows and duvet, you cut off that exposure completely. Most customers notice a real difference within two to four weeks. Many tell us it is the first thing that has actually worked.

No chemicals at all. Our eucalyptus silk fabric is woven so tightly that the pores measure around 5 microns, which is small enough to stop dust mites and their allergen particles from getting through. It works purely through the fabric structure, so it never washes out. All materials are OEKO-TEX certified and safe for sensitive skin.

Not at all. Once you encase your mattress, the allergens inside are sealed away from you. Your existing mattress, pillow and duvet are all fine to use. No need to throw anything out or buy new bedding first.

Nothing like those. Our eucalyptus silk is genuinely soft, breathable and silent. Once your normal bedding is on top you will forget they are there. A lot of customers are surprised by how comfortable they are.

Absolutely. All materials are OEKO-TEX certified and safe for children, including those with eczema or asthma. We include a Cot Bed size in this set. Encasing your child's bed is one of the most recommended steps by allergists for reducing symptoms without relying on medication.

The barrier works from night one. Most people start noticing less congestion and irritation within one to two weeks, with a clearer improvement by the end of the first month. The more of your sleeping area you protect, the faster you tend to feel it.

Wash them once a month at 60 degrees and let them air dry. Do not tumble dry. The barrier does not degrade with washing because it is built into the fabric structure. Your bedding on top should be washed weekly at 60 degrees as part of your normal routine.

We offer Cot Bed, Single, Double, King and Super King. If your mattress falls between sizes, go up to the next one. It still gives you full protection and is easier to fit. Our standard encasement suits mattresses between 10 and 30cm deep. For mattresses between 30 and 45cm, you will need our deep fit version which is listed separately on the site.

UK orders are dispatched quickly and you will get a tracking email as soon as they are on their way. If you are not happy for any reason, just get in touch within 30 days. You can reach us at Hello@iDustMite.com, on live chat between 8am and 8pm, or by phone on 0330 122 1646. We are always happy to help.

Testimonials #38

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  • 5 stars: 52 (84%)
  • 4 stars: 10 (16%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
This is a bundle with no reviews of its own. The merchant set it to show reviews from the products it includes.
E
Edward Langley
a professional health investment

As someone who deals with chronic respiratory issues, I needed a solution I could trust. The clinical protection is clear

T
Tilly H.
Great, but tricky on a deep feather duvet

Had a right laugh trying to squeeze my huge feather duvet into this. Definitely needs two people and a strong zip (which this has!). It's great now it's on; my itchy skin has cleared up completely

t
thelucyslade
game changer for my morning routine

This duvet case is incredibly soft, it doesn't crinkle at all, and it fits perfectly inside my normal cover. It's solved a major problem effortlessly

S
Samuel Norton
Noticeable improvement in skin irritation

I bought this after the itching drove me mad. The reduction in red skin and irritation has been dramatic. I love the silky feel of the eucalyptus fabric

H
Harrison D.
No more waking up with a sore throat!

the duvet is sealed with this product, the problem is gone. The hypoallergenic coating is clearly doing its job

r
realmiawells
Bought the full set this completes the barrier

t’s quiet, cool, and keeps all the mould/pollen away from the filling. Highly recommended

E
Elsie
Feels incredibly lightweight, yet fully sealed

My breathing is clearer than it's been in years. Excellent quality control

F
Finlay C.
The Tencel/Silk feel is a real bonus

Seriously high-quality bedding

L
Lottie A. Summers
Works, but packaging was a bit flimsy

I just wish the delivery packaging was a little more robust. That said, the fabric protector inside was fine

H
Holly Townsend
excellent defence against seasonal pollen

got this before hay fever season and wow, what a difference. no more sneezing when i open the window. super effective and seals perfectly

J
Jude N.
final barrier for a clean bed

if you’ve got the mattress and pillows covered, you need this too. feels so secure knowing the whole bed’s sealed from mites

i
itsmaisietate
Easy care instructions for hygiene

I liked that you only need to vacuum or wash this monthly, while keeping the external covers clean weekly

h
harryjpotterson
softer than my original duvet cover!

really works for my dust allergy. zip’s a bit stiff at the corners, but that’s just the tight seal. overall, brilliant

O
Owen F.
my husband finally stopped wheezing

this was the last thing we needed for the set. he used to wheeze at night, but it’s almost stopped since sealing the duvet. wish we’d done this years ago

S
Sienna Rowland
lightweight and not 'plasticky'

zero crinkle and no extra heat. just a silky-smooth barrier. easy to fit on my double duvet. doesn’t feel medical, which is a big plus

J
Jamie K.
brilliant barrier, but sizing advice needed

fits my king-size duvet really tight, so maybe clarify dimensions better. still a highly recommended anti-allergy product

B
Beatrice Carteron
fantastic for sensitive skin

feels super luxurious. highly recommend for eczema sufferers

n
noahbgrant_
for health investment

soft, quiet, and no negative effects. a must-have for quality of life

F
Florence Hayward
sleep quality is noticeably better

used to wake up groggy even after 8 hours. now i wake up properly rested and no tight chest. this duvet protector seals away years of mites

R
Reggie T.
so much better than my old plastic cover

my old anti-allergy duvet felt like sleeping in a crisp packet. this one’s soft, cool, and silent. hands down the best duvet protector

P
Patricia Nielsen
Excellent quality - soft silky feel and easy to fit

Excellent quality - soft silky feel and easy to fit. Only problem is that the duvet gets bunched easily in the duvet cover and needs to be put back into shape daily. As to relieving itching, it is too soon to tell.

D
David Jones
The set has been very effective in eliminating my daughters allergic reaction.

The set was bought for my daughter visiting us. She has always suffered from a reaction previously to dust mites.
The bedding has totally transformed things and she has not had any reaction in nearly two weeks of use. Long may it continue.

A
Anonymous
Easy to put

Easy to put on

J
Jeffrey

We ordered this duvet protector for our bed and the micro zip actually completely seals the allergens out. The heavy congestion stopped after the first few nights. Material is very quite when tossing around and doesn't trap heat or make us sweat

S
Stephanos Oatse
works as advertised

Zipped it up right over my duvet as soon as I recieved it in the mail. The barrier actually keeps all the dust inside the blanket instead of in my face and it doesn't bunch up inside my regular sheets

P
Penelope Jose
NO MORE RANDOM FLARE UPS

my dermatologist told me it might be dust mites in my bedding so i begged my parents to buy me this cover for my room it actually worked and the fabric is sooo smooth. it creates a complete barrier so nothing gets through to my skin and it doesnt shrink in the wash. my face and arms are totally clear now also

M
Mateo Alvarez

Solid product. I track my sleep metrics for fitness, and my deep sleep has literally improved since putting this on my bed because Im not waking up congested. Its low maintenance, washes easily, and doesnt trap heat so I stay cool at night!

R
Rover Pete

my allergies have been playing up rotten, but this cover has sorted me right out. sleeps nice and cool too. but the zip caught slightly on my first go, but it smoothed out easily enough

L
Leanne_Smith

it’s hard to justify the high cost when things in the shops are so expensive right now. i suppose you cant put a price on breathing properly, but I do wish it was a bit cheaper

G
Gary Barnes
The material is dead quiet

The material is dead quiet, so there's no annoying rustling when they roll over, and it does exactly what it says on the tin. Couldn't be happier, thoroughly recommend!

A
Andrew Morris
I received the covers I ordered quickly

I received the covers I ordered quickly. They were also helpful in advising how my order could be tailored to my needs.

A
Anonymous
Great product

Great product. Excellent customer service. We will use this company again. Thank You.