Don't Miss Out On CloudTopper's Winter Sale!
4.8
Based on 3,500+ Reviews
Wake Up Pain Free – This Mattress Topper is a Game Changer
Transform Your Bed Into a Cloud-Like Sleep Sanctuary, Sleep Deeper, Ease Discomfort, and Wake Up Feeling Fully Refreshed, Every Single Morning
Instantly Softens Hard, Uncomfortable Mattresses
Promotes Deeper, More Restorative Sleep
Relieves Pressure Points & Reduces Aches
Helps With Back, Hip & Joint Pain
Notice the Comfort Upgrade From Night One
All transactions are secure and encrypted
Customer Reviewed
"As a chronic back pain sufferer, I’ve tried everything, but nothing worked like CloudTopper. Total game changer for my sleep."
Charles Henry, London
Customer Reviewed
"As a chronic back pain sufferer, I’ve tried everything, but nothing worked like CloudTopper. Total game changer for my sleep."
4.8
Based on 3,500+ Reviews
King Size Mattress Toppers
Sleep like royalty with the CloudTopper King Size Mattress Topper, designed to give your bed the space, support and softness you deserve. Ideal for couples who love room to stretch, or anyone who wants that hotel-luxury feel at home.
Made from premium microfibres with a breathable cotton cover, this king size bed mattress topper adds instant plushness to any mattress. Join over 55,000 happy UK sleepers who’ve already discovered a better night’s rest.
Instantly Softens Hard, Uncomfortable Mattresses
Promotes Deeper, More Restorative Sleep
Relieves Pressure Points & Reduces Aches
Helps with Back, Hip & Joint Pain
Notice the Comfort Upgrade From Night One
All transactions are secure and encrypted
Customer Reviewed
"As a chronic back pain sufferer, I’ve tried everything, but nothing worked like CloudTopper. Total game changer for my sleep."
Charles Henry, London
Customer Reviewed
"As a chronic back pain sufferer, I’ve tried everything, but nothing worked like CloudTopper. Total game changer for my sleep."
Customer Reviewed
"As a chronic back pain sufferer, I’ve tried everything, but nothing worked like CloudTopper. Total game changer for my sleep."
Charles Henry, London
100-night risk free trial
If you don’t love your new sleep experience, send it back, free of charge. No stress, no questions asked.
Free Shipping From UK Warehouse
Fast and free shipping on all orders, directly from our Nottingham warehouse.
Premium Quality Materials
Made with breathable, hypoallergenic microfibres and durable box-stitching for lasting, luxurious comfort.
Loved by 3,500+ Sleepers
Join thousands of happy customers who call the CloudTopper a “life-changer” for pain-free, luxurious sleep.
Wake Up Rested, Not Aching
Improves Sleep
Quality
Promotes deeper, uninterrupted sleep from the very first night
Relieves Pressure
& Aches
Improves blood flow in your entire upper and lower body
Breathable
& Cooling
Temperature-regulating microfibres keep you cool and comfortable all night
Hypoallergenic
& Washable
Safe for sensitive sleepers and easy to keep fresh and clean
Wake Up Pain Free
Tired of waking up sore or stiff? The CloudTopper king mattress topper helps ease pressure points and support your spine’s natural alignment. Its generous fill cushions your back, hips and shoulders for a calmer, more restful sleep, so you wake up refreshed and ready for the day.
Gentle support where you need it most.
Helps reduce morning stiffness.
Designed for deep, restorative rest.
King Size Mattress Topper Dimensions
Our king size mattress topper fits all standard UK king beds at 150cm x 200cm (5ft x 6ft 6in).
With a plump 10cm (4-inch) depth, this thick mattress topper king gives extra lift, softness and long-lasting support - perfect for couples who don’t want to feel every toss or turn.
Luxury hotel feel, every night
Stays cool and supportive all night long
All-natural, fits securely with extra-deep pockets - no additives
Benefits of a King Size Mattress Topper
Upgrading to a mattress topper for king-size beds adds a touch of everyday luxury. You’ll enjoy:
Luxurious comfort & pressure relief – the soft, cloud-like filling supports and soothes.
Improved spinal alignment – designed to keep your posture naturally supported.
Extended mattress life – protects against wear, sagging and stains.
Better for couples – spacious comfort that minimises partner movement at night.
Why Choose CloudTopper?
We’re a proud UK brand helping thousands sleep better every night. When you choose CloudTopper, you’re getting more than just nighttime comfort.
100-night sleep trial – try it for over three months, love it or return it free.
Free delivery and returns – fast shipping from our Nottingham warehouse.
Trusted by UK sleepers – over 55,000 satisfied customers across the UK.
Built to last – machine washable, durable design that stays soft for years.
Sleep softer, longer and better – without replacing your mattress.
CloudTopper™ vs. Other Mattress Toppers
What Makes CloudTopper™ the Clear Winner for Better Sleep?
Happy Customers are giving them 4.8 stars!
Paula H.
Surprisingly effective for my arthritis , A total game changer!"
Verified Buyer
“This is my Cloud Topper. Clearly visible even under a thick cotton sheet and mattress protector! I was sceptical about it at first but it’s been a godsend. I struggle so much with arthritis, especially at night. This makes me so much more comfortable and I can turn over without any increased pain! It means I get a much better nights sleep and so does my husband because I’m not disturbing him. Well worth it.”
58 people found this helpful
Karen Haney
“It transformed our sleep, and our life!”
Verified Buyer
“We received our King size CloudTopper, very promptly, and it has not only transformed our bed, but also our life! To say this Topper is amazing, and incredible, is not even close to describing how delighted we are! No more tossing and turning with broken sleep, and no more aches and pains in our back, neck and shoulders.
The CloudTopper is incredibly thick, plumptuous, and supportive, and when coupled with the CloudTopper deep fitted sheet, (100% Egyptian Cotton), and the CloudTopper Pillows, it is like sleeping on top of a giant marshmallow!
We highly recommend the CloudTopper products, and the Company. They are extremely passionate about what they do, as well as being efficient and attentive, to their customers' needs, and Customer Care is Top of the Tree! Our bed looks as amazing as we feel!
Thank you CloudTopper!
We will be back for more!”
58 people found this helpful
Charlotte T.
Still Loving It After 2 Months!
Verified Buyer
“It’s in the name💛☁️ These cloud toppers are amazing!!so so beautiful and fab quality. We have had ours for nearly 2months now and I’m still loving it!! Super soft,comfy and I’m going to get my children one aswell,we all deserve this amazing nights sleep and comfort. Thankyou”
58 people found this helpful
100-Night Risk-Free Trial
Try It. Sleep On It. Decide Later.
We’re confident you’ll fall in love with CloudTopper, but just in case, you get 100 nights to sleep on it, literally.
If you don’t wake up feeling more rested, supported, and pain-free, simply return it. No pressure. No hassle. No hard feelings.
100-night sleep trial for ultimate peace of mind
Full refund if you're not 100% satisfied
Easy, stress-free returns
Customer Reviewed
"As a busy mum, quality sleep felt impossible, but since getting the CloudTopper, I wake up refreshed and pain-free every morning."
Emma R, Manchester, UK
4.8
4.9 Rating From Happy Customers
Special Offer on Now!
Don't miss out on CloudTopper's Black Friday Sale!
Try Your CloudTopper Mattress Topper NOW Risk-Free at an All Time Low Price!
Act Now and You'll Get:
Get 50% OFF on every size
Get an extra 10% off for first time customers.
Fast delivery and free returns
100-night free trial
Size
Total Value:
Today’s Price:
(Save 50%)
All transactions are secure and encrypted
Customer Reviewed
"As a busy mum, quality sleep felt impossible, but since getting the CloudTopper, I wake up refreshed and pain-free every morning."
Emma R, Manchester, UK
Free Shipping From UK Warehouse
100-night risk
free trial
Premium Quality
Materials
Loved by 3,500+
Sleepers
Our Story
Our Story
At CloudTopper, we’re on a mission to transform sleep across the UK, one bed at a time. We believe that everyone deserves a better night’s rest. That’s why we’ve created affordable and easy to apply sleep solutions that deliver real results: reduced pain, deeper sleep, and no need to replace your entire mattress.
Launched in April 2024, CloudTopper has already helped over 30,000 customers sleep better, with more than 4,300 five star reviews and counting.
Our flagship product, The CloudTopper, is now the UK’s best selling mattress topper, loved for its cloud like comfort, pressure relief, and breathable design. Whether you’re reviving an old mattress or simply upgrading your sleep, we’re here to help you wake up feeling truly refreshed.
Better sleep leads to better days. That’s the CloudTopper promise.
Frequently Asked Questions
What size is a king size mattress topper?
A king size mattress topper measures 150cm x 200cm (5ft x 6ft 6in) - perfect for standard UK king beds. The CloudTopper king fits snugly, adding extra cushioning, support and comfort for a deeper, more restful night’s sleep.
Is a king size topper good for couples?
Yes, our mattress topper king is perfect for couples wanting extra width and space. The generous size and plush depth mean less partner disturbance and more personal comfort. It’s ideal for a peaceful night’s sleep, every night.
What thickness is best for a king size topper?
Most bed toppers range from 2–4 inches thick. The CloudTopper 10cm king topper provides superior cushioning, softness and durability - offering hotel-quality comfort and better pressure relief than thinner options.
How long will a king size topper last?
With proper care, your CloudTopper king-size mattress topper UK will last around 3–5 years while keeping its supportive feel. It’s made from durable microfibres and a premium cotton casing that stands the test of time.