How to Choose the Right Mattress Thickness for Your Back
Find the perfect mattress thickness to support your spine and wake up pain-free every day.
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The Diamond Difference
Sleep is Precious.
We Make it Perfect.
Four collections, one obsession: engineering the most restful night's sleep you've ever had. Pocket springs, memory foam and honest craftsmanship — built to last a decade.
DIAMOND COLLECTION
Pocket SpringPrecision support that adapts
Memory FoamContours to you for pressure relief
Built to LastExpert craftsmanship you can feel
Free DeliveryOn All Orders
Up to 10 Years WarrantyOn All Mattresses
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24/7 SupportWe're Here to Help
Four Collections
Shop by Collection
Every Diamond Mattress collection is built around a different construction — choose by thickness, feel, or the support your body needs.
Best Value
25cm · Tight Top
Diamond Essential
Honest, breathable comfort for everyday rest
1 Year WarrantyStarting at
£99
View Collection →
£99
Most Popular
30cm · Euro Top
Diamond Sleep Comfort
A softer top layer for deeper, uninterrupted sleep
2.5 Years WarrantyStarting at
£239
View Collection →
£239
Tallest Build
35cm · Euro Top
Diamond Hybrid Royal
Our tallest build, engineered for full-body support
5 Years WarrantyStarting at
£299
View Collection →
£299
Flagship
30cm · Euro Top
Diamond Premium Luxe
Memory foam comfort with targeted zonal support
10 Years WarrantyStarting at
£399
View Collection →
£399
See It In Action
Watch the Diamond Mattress Story
Under the Cover
Engineered for Your Best Sleep
Every Diamond Mattress is built in real, purposeful layers — shown here for the Diamond Premium Luxe. Hover a layer to see what it does.
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Deep SupportFrom core to comfort
Spinal AlignmentDesigned for your body
Lasting ComfortNight after night
Top — Quilted knitted fabric + polyester fibre + foam
The first touch — soft, breathable, and quilted for comfort.
Filling — Memory foam + foam
Cushions pressure points at the shoulders and hips for a relaxed, weightless feel.
Support — Three-zone pocket spring with foam box
Zoned coils that follow your spine's natural alignment and reduce motion transfer.
Base — 1cm foam + polyester fabric
Durable foundation that keeps everything above it stable for years.
Before & After
See the Difference
Compare our mattresses before and after sleep to experience the transformative comfort and support.
Which One Is Yours?
Full Comparison Table
Compare Our Collections
Better Sleep, Better You
Improves Sleep Quality
Relieves Back & Neck Pain
Supports Spinal Alignment
Enhances Energy & Focus
Promotes Overall Well-Being
Verified Buyers
What Our Customers Say
"The Sleep Comfort is the best mattress I've ever bought — super comfortable, worth every rupee."
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Sarah J.
Verified Buyer
"Amazing support and quality. I wake up fresh and pain-free every morning on the Premium Luxe."
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Michael T.
Verified Buyer
"Diamond Mattress truly lives up to its name. The Hybrid Royal is worth every penny. Highly recommended!"
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Emily R.
Verified Buyer
Why Sleepers Trust Us
Diamond Mattress, By the Numbers
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Mattresses Delivered0
Years Warranty0
Customers Would Recommend Us0
Customer SupportGot Questions?
Frequently Asked Questions
Most orders are delivered within 3-7 working days across the UK, and delivery is completely free on every mattress — no minimum order value required.
Warranty length depends on the collection — from 1 year on Diamond Essential up to 10 years on Diamond Premium Luxe — and covers manufacturing faults such as sagging beyond the accepted limit, broken springs, or defective foam. It doesn't cover normal wear and tear or stains.
Yes — every mattress comes with a trial period so you can sleep on it at home. If it isn't right for you, get in touch and our team will talk you through your options.
It depends on your preferred feel and budget. Use our Compare Collections table to see thickness, construction and firmness side by side, or contact us and we'll help you choose.
Rotate your mattress every few months, use a breathable mattress protector, and avoid bending or folding it. Spot-clean any marks with a mild detergent and let it air dry fully before use.
If your mattress is faulty or not as described, you're entitled to a refund or replacement under our Refund Policy. See the full Refund Policy page for eligibility windows and how to start a claim.
