10 Best 4 Inch Microfibre Mattress Topper King Size in The UK

Last updated on 02/08/2025

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Silentnight Ultimate Deep Sleep 10cm Mattress Topper King Size Bed - Luxury 4 Inch Thick Soft Mattress Enhancer Pad with Easy Fit Straps – Hypoallergenic and Machine Washable – King – 200x150cm

27% Off

Why We Love It

Indulge in cloud-like comfort.
Ensures plush, long-lasting support.
Revitalizes any mattress effortlessly.

Main Highlights

ULTRA DEEP: 10cm depth for cloud like cushioned comfort so you can experience a deeper sleep
ULTIMATE COMFORT: The quilted cover features internal walls to ensure the gently supportive filling stays in great shape and is always plump
ENHANCES YOUR MATTRESS: Rejuvenate any mattress by adding an extra 10cm of comfort for you to sink into
EASY FIT STRAPS: The easy fit straps provide a secure fit
HYPOALLERGENIC AND MACHINE WASHABLE: Kind to skin and does not include any contents likely to cause allergies and Fully machine washable so you can keep enjoying a deep sleep

MightySoft Mattress Topper Kingsize Bed 10cm Thick - Quilted, Extra Deep, Ultra Fluffy and Breathable Microfiber Topper, Securely Fits with Elastic Straps, Enhances Comfort & Supports Restful Sleep

20% OffFree Shipping

Why We Love It

Cloudlike sleep experience.
Elegant and cozy design.
Ensures warmth and comfort.

Main Highlights

𝐂𝐥𝐨𝐮𝐝𝐥𝐢𝐤𝐞 𝐒𝐥𝐞𝐞𝐩 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: Made with breathable microfiber, MightySoft king size mattress toppers wrap you in a soft, cloudlike embrace, offering warmth and comfort that lasts all night for a hotel-style sleeping experience.
𝐄𝐥𝐞𝐠𝐚𝐧𝐭 & 𝐂𝐨𝐳𝐲 𝐁𝐞𝐝𝐝𝐢𝐧𝐠 𝐔𝐩𝐠𝐫𝐚𝐝𝐞: MightySoft white king mattress topper adds an elegant, clean look to your bed, making it cozy and inviting. It revitalizes your old mattress and gives your bedroom the luxurious feel of a high-end hotel.
𝐄𝐱𝐭𝐫𝐚 𝐖𝐚𝐫𝐦𝐭𝐡 𝐟𝐨𝐫 𝐂𝐨𝐥𝐝 𝐍𝐢𝐠𝐡𝐭𝐬: MightySoft king size mattress topper adds a thick, insulated layer to your bed, making it ideal for cold nights. Say goodbye to shivers and enjoy warm, restful, and cozy nights throughout winter.
𝐄𝐚𝐬𝐲 𝐭𝐨 𝐖𝐚𝐬𝐡 & 𝐌𝐚𝐢𝐧𝐭𝐚𝐢𝐧: Vacuum-sealed for freshness, allow 24–48 hours to fully expand before use. Machine wash at 40°C and tumble dry on low to keep your quilted kingsize mattress topper fresh, clean, and long-lasting.
𝐒𝐧𝐮𝐠 & 𝐒𝐞𝐜𝐮𝐫𝐞 𝐅𝐢𝐭: The MightySoft 10cm mattress topper king size features strong elastic corners for a tight and secure fit on most standard mattresses —no more slipping, sliding, or bunching during the night.
𝐇𝐲𝐩𝐨𝐚𝐥𝐥𝐞𝐫𝐠𝐞𝐧𝐢𝐜 𝐂𝐨𝐦𝐟𝐨𝐫𝐭: Crafted with ultra-soft, hypoallergenic materials, MightySoft thick mattress topper kingsize bed are ideal for allergy sufferers, offering gentle comfort that helps improve your sleep quality and overall well-being.
𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐓𝐡𝐢𝐜𝐤𝐧𝐞𝐬𝐬 & 𝐒𝐮𝐩𝐩𝐨𝐫𝐭: With 10cm of extra filling, MightySoft bed toppers king size add a plush layer of softness and support. The quilted king size bed topper design evenly distributes fill for consistent comfort and better sleep throughout the night.
𝐁𝐫𝐞𝐚𝐭𝐡𝐚𝐛𝐥𝐞 𝐚𝐧𝐝 𝐏𝐞𝐚𝐜𝐞𝐟𝐮𝐥 𝐒𝐥𝐞𝐞𝐩: Mightysoft offers a diamond-quilted design that promotes airflow and maintains an ideal sleep temperature. Our soft mattress toppers king size bed stays quiet all night—no rustling sounds or overheating, just peaceful rest.
𝐀𝐟𝐟𝐨𝐫𝐝𝐚𝐛𝐥𝐞 𝐋𝐮𝐱𝐮𝐫𝐲 𝐔𝐩𝐠𝐫𝐚𝐝𝐞: Enjoy a luxurious sleep experience without replacing your mattress. MightySoft king size mattress topper offers plush comfort and warmth at an affordable price, giving you value without compromise.
𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞𝐝: The MightySoft team is committed to your comfort. Our king size extra thick mattress topper comes with a satisfaction guarantee. If you face any issue or have a question, reach out and we’ll ensure you’re fully taken care of.

NIGHTSLEEP Microfibre Mattress Topper, 4 Inch/10cm Thick, Supersoft Heavy Fill, Single, Double, King, Super King, Box Stitched, Elasticated Corner Straps, White (King)

Why We Love It

Supersoft comfort for restful sleep.
Fits most standard mattress sizes.
Hypoallergenic and allergy-friendly material.

Main Highlights

Plush Comfort: This 10cm/4-inch microfibre mattress topper provides supersoft, heavy-fill comfort for a luxurious sleep experience.
Versatile Sizing: Available in single, double, king, and super-king sizes to fit most standard mattresses.
Secure Fit: Box-stitched construction and elasticated corner straps ensure a snug fit and prevent shifting.
Easy Care: Machine-washable for effortless cleaning and maintenance.
Hypoallergenic: Ideal for those with allergies, as the microfibre material is resistant to dust mites and other allergens.

4AS Supersoft Mattress Topper Kingsize Bed - 1100 GSM Filling 4 Inch (10cm) Thick Mattress Topper with Elasticized Corner Straps - White (King 150x200 cm)

11% OffFree Shipping

Why We Love It

Perfect size for any mattress.
Hypoallergenic for sensitive skin.
Secure fit with corner straps.

Main Highlights

PERFECT SIZE - 4AS premium king size mattress toppers measure 150x200cm and 10cm thick, made with soft microfiber material. It gives your mattress an elegant look
ANTI-ALLERGY - Our king mattress topper is designed with hypoallergenic material to provide a soft and comfortable surface that's gentle on your skin and safeguards against allergens
ELASTIC CORNER STRAPS - Our matress topper comes with elasticized corner straps that securely hold the topper in place, preventing any movement during the night. It is very easy to install
SOFT AND GENTLE - Our king size mattress topper is super soft, made of 100% microfibre filling, gently supporting your body for a more restful sleep experience
CARE INSTRUCTIONS - Our firm mattress topper is machine washable so you can keep enjoying a deep sleep ensuring your topper stays fresh and clean. Do not use bleach

Mattress Topper Extra Deep 4 Inch Deep (10CM)- King Size Mattress Topper Fluffy Hypoallergenic Microfibre with Strong Corner Straps (4Inch Deep, King)

15% Off

Why We Love It

Ultra-soft and breathable material.
Convenient machine washable design.
Extra deep for ultimate comfort.

Main Highlights

Includes 1 x Extra Deep King Size 4 Inch /10cm thick Mattress Topper
Material: Made from super soft brushed micorfiber and filled with microfiber, Extra Deep and breathable
Dimensions: King Size150cm x 200cm + 10cm
Box stiched to keep filling in place, high quality straps on corner, breahable, hypoallergenic, soft,
Machine Washable

HIGH LIVING Microfibre Mattress Topper 4 Inch/10 cm Supersoft Heavy Fill Single Double King SuperKing Box Stitched and Elasticated Corner Straps (King)

Free Shipping

Why We Love It

Supreme quality ensures comfort.
Secure fit with elasticized straps.
Hypoallergenic for allergy sufferers.

Main Highlights

Highliving Mattress Toppers are made of premium quality material. Made up of 100% polyester fiber that gives you cozy feel. It provides extra plush padding and support for your shoulders and hips.Filled with 100% polyester virgin hollow fibre.
Our Mattress Topper comes with elasticized corner straps which are best thing to prevent topper from slipping and gives a snug fit and providing consistent comfort. Start your restful sleep from a great down alternative mattress topper. Easy to install with on/off elastic bands.Toppers are 4 inch or 10 cm thick approximately.
High Living mattress topper comes in different sizes perfectly fits to your mattress like mattress topper double size, king size mattress topper, mattress topper single and super king mattress topper. SINGLE: 90cm X 190cm approx. DOUBLE: 137cm X 190cm approx. KING: 150cm X 200cm approx. SUPER KING: 183cm X 200cm approx.
Our bed toppers are made up of hypoallergenic material that ensures the prevention of allergy causing bacteria and dust-mites. Ideal choice for people suffering from any allergy because it stops the growth of mold, bacteria or other allergens.
Maintenance of microfiber mattress toppers is very simple. Machine washable below 40 degrees. Washable with similar colors & choose the most gentle washing way. Add only comfort and no worries.

High Living King Size Mattress Topper 4Inches/10cm Thick 1100 GSM – Quilted Ultra Fluffy Microfibre150 x 200 cm, Extra Deep Breathable Bed Topper with Elastic Corner Straps

Free Shipping

Why We Love It

Cozy and plush padding.
Prevents slipping, snug fit.
Hypoallergenic and machine washable.

Main Highlights

Highliving Firm Mattress Topper are made of premium quality material. Made up of 100% polyester fiber that gives you cozy feel. It provides extra plush padding and support for your shoulders and hips.Filled with 100% polyester virgin hollow fibre.
Our Bed Cover comes wit elasticized corner straps which are best thing to prevent topper from slipping and gives a snug fit and providing consistent comfort. Start your restful sleep from a great down alternative mattress topper. Easy to install with on/off elastic bands.Toppers are 10 cm thick approximately.
High Living mattress protector comes in different sizes perfectly fits to your mattress like mattress topper double bed size, mattress topper kingsize bed , mattress topper single and super king mattress topper. SINGLE: 90cm X 190cm approx. DOUBLE: 137cm X 190cm approx. KING: 150cm X 200cm approx. SUPER KING: 183cm X 200cm approx.
Our mattress toppers are made up of hypoallergenic material that ensures the prevention of allergy causing bacteria and dust-mites. Ideal choice for people suffering from any allergy because it stops the growth of mold, bacteria or other allergens.
Maintenance of microfiber mattress protector toppers is very simple. Machine washable below 40 degrees. Washable with similar colors & choose the most gentle washing way. Add only comfort and no worries.

linensland® Mattress Topper Kingsize Bed 4 Inch Thick - Hypoallergenic Microfiber - Enhance Comfort, Improve Sleep Quality - Strong Corner Elastic Straps (150x200+40 cm)

Why We Love It

Stays cool all night.
Unmatched comfort and support.
Machine washable for easy maintenance.

Main Highlights

Experience ultimate breathability with our high-grade cooling mattress topper. Stay cool and sweat-free all night as the fabric allows air to circulate, ensuring a comfortable and refreshing sleep.
Indulge in ultimate sleep luxury with our mattress topper kingsize bed. Filled with super soft virgin hollow fiber, it provides unmatched comfort, unlike firm alternatives.
Transform your mattress into a cozy haven for a rejuvenating sleep with our quilted baffle box design mattress topper. Experience ultimate comfort, even weight distribution, and optimal back support.
Secure your sleep with our highly durable firm mattress topper. Four elasticated corner straps keep it in place, preventing slipping and sliding during your movements.
Easy maintenance unlike memory foam: Machine washable at 40°C with mild detergent. Tumble dry at low heat for hassle-free cleaning and freshness.

King Size Mattress Topper – 4 Inch (10cm) Extra Deep Microfibre – Super Fluffy & Breathable Hollowfibre Fill – Box Stitched, Elastic Corner Straps – White

6% Off

Why We Love It

Luxurious sleep experience guaranteed.
Easy to fit and stable.
Breathable design prevents sweating.

Main Highlights

Extra Comfort: This 10cm/4-inch Holowfibre Mattress topper provides Premium Comfort embraced with extra warmth that leads to a Luxurious sleep experience
Elasticated Corner Straps: These Elasticated Straps make it easy for Mattress Topper to fit accordingly, helps stability and also make sure to provide equal support to every corner.
Design & Material: This breathable mattress topper is made from high-grade Hollowfibre Its unique box stitching design ensure good airflow and prevent sweating. No creaking noises, so you can sleep peacefully.
Easy Care: Mattress Toppers are vacuum packed, after opening it will be fluffy again Machine washable at 40°C, tumble dry on low temperature
Customer Satisfaction: If you are facing any issue or have any query, feel free to approach us and we will make sure to provide you the best solution.

Luxury 4" (10cm) EXTRA DEEP 100% Super Soft MICROFIBRE Feels Like Down MATTRESS TOPPER Enhancer King

Why We Love It

Generous 4-inch thickness comfort.
Premium microfibre luxurious fill.
Breathable material for balance.

Main Highlights

Sizes: Single 90cm x 190cm | Small Double 120cm x 190cm | Double 137cm x 190cm | King 150cm x 200cm | Super King 180cm x 200cm
Superior Depth: Boasting a generous 4-inch thickness, this topper offers an elevated level of comfort, turning any mattress into a plush retreat.
Premium Microfibre Fill: Experience the luxurious feel of high-quality microfibre, expertly designed to mimic the softness and loft of natural down without any allergens.
Breathable Material: The microfibre material promotes air circulation, ensuring a balanced sleeping temperature throughout the night.
Hypoallergenic: Ideal for sleepers with allergies or sensitivities, our microfibre topper is resistant to dust mites, mould, and other allergens.
Baffle Box Stitching: Crafted with baffle box construction to keep the filling evenly distributed, preventing lumps and ensuring consistent support and comfort.
Secure Fit: Equipped with robust elasticated corner straps, ensuring the topper remains anchored to your mattress without any shifts or slides.
Easy Maintenance: Designed for modern living, this topper is machine washable, ensuring effortless upkeep and prolonged freshness.
Soft-touch Cover: The outer cover, crafted from a soft and durable fabric, further enhances the overall sleeping experience, offering a smooth touch against the skin.
Prolonged Mattress Life: Acting as a protective layer, this topper not only boosts comfort but also extends the life and condition of your existing mattress.

8.9

Excellent

We scanned 598 products

We reviewed these offers relevant to the 4 Inch Microfibre Mattress Topper King Size within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Silentnight, MightySoft, NIGHTSLEEP, 4AS, AmigoZone, HIGH LIVING, LINENSLAND, SK MERCHANDISE, Value Comfort Home, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best 4 Inch Microfibre Mattress Topper King Size in the market, we considered we took a deep dive into 2991 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Silentnight Ultimate Deep Sleep 10cm Mattress Topper King Size Bed - Luxury 4 Inch Thick Soft Mattress Enhancer Pad with Easy Fit Straps – Hypoallergenic and Machine Washable – King – 200x150cm. We love many things about this product by Silentnight. What sets it apart from the competition is Indulge in cloud-like comfort. , Ensures plush, long-lasting support. , Revitalizes any mattress effortlessly.
The best value product for most shoppers and where user satisfaction is continuously the highest is MightySoft Mattress Topper Kingsize Bed 10cm Thick - Quilted, Extra Deep, Ultra Fluffy and Breathable Microfiber Topper, Securely Fits with Elastic Straps, Enhances Comfort & Supports Restful Sleep by MightySoft based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for 4 Inch Microfibre Mattress Topper King Size and the best cost-to-value ratio is Silentnight Ultimate Deep Sleep 10cm Mattress Topper King Size Bed - Luxury 4 Inch Thick Soft Mattress Enhancer Pad with Easy Fit Straps – Hypoallergenic and Machine Washable – King – 200x150cmat Silentnight with a 27% discount.
Our list of the best 4 Inch Microfibre Mattress Topper King Size is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best 4 Inch Microfibre Mattress Topper King Size in The UK

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We scanned 598 products

We concluded that: