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Dormeo Octasmart Classic Mattress Topper

Review Stars
4.4/5
(29 Reviews)
Select size:
Select Size
  • Foam
  • 8 Year Warranty
  • Firmness: Medium
From
£156
Dormeo Octasmart Classic Mattress Topper
From
£156

Delivery

3 payments from £52.00
18+, T&C’s apply. Credit subject to status

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Pay in 3

Based on a spend of £156

3 interest-free payments of £52.00

The first payment is made at point of purchase, with the remaining 2 payments scheduled automatically every 30 days. No fees

18+, T&C apply, Credit subject to status.

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Delivery & Returns FAQs
Price Match Request

Features You'll Love

  • Medium - Good all rounder for front, side or back sleepers.
  • 7cm deep with three layers of breathable foam
  • Hundreds of Octasprings adapt to your body shape
  • 3 body zones support your back, shoulders and hips
  • Anti-slip base helps keep the topper in place
  • Octavent Air System cools your bed by up to 3°C
  • 8x more breathable than traditional memory foam
  • Hypoallergenic - resists dust mites, mould and bacteria
  • Removable cover, machine washable at 40°C
  • Backed by an 8-year warranty

Product Overview

The Dormeo Octasmart Classic is a 7cm foam mattress topper that combines three layers of breathable foam to refresh an existing mattress without the cost of replacing it. A top layer of open-cell Aerocell foam moulds to your shape, a core of hundreds of Octaspring foam springs arranged in 3 body zones adapts to your body as you move, and a supportive Ecocell foam base completes the construction. The Octasmart Classic also features the Octavent Air System, which keeps air circulating through the topper to help cool your bed by up to 3°C. The result is a medium topper that evens out the lumps and bumps of an older mattress and supports your back, shoulders and hips, while staying fresh and breathable through the night, backed by an 8-year warranty.

Who Is This Topper For?

The Dormeo Octasmart Classic is a 7cm medium mattress topper made from Aerocell foam, Octaspring foam springs and Ecocell foam, with 3 body zones and the Octavent Air System for a cooler night's sleep.

A zoned foam spring topper best suited to side, back and front sleepers who want to refresh an existing mattress with breathable, pressure-relieving support and a cooler sleep surface.

Medium - 3/6: The Goldilocks option - not too firm, not too soft. Medium is the most versatile firmness level, balancing comfort and support in a way that suits most sleeper types.

Best for

  • Side sleepers - cushions pressure points while keeping your spine aligned
  • Back sleepers - supportive enough to maintain the natural curve of your spine
  • Front sleepers - firm enough to help prevent hips from sinking too far
  • Those wanting to refresh an older mattress - Octasprings help even out lumps and bumps for a more comfortable surface
  • Hot sleepers - the Octavent Air System helps cool your bed by up to 3°C
  • Allergy sufferers - hypoallergenic treatment resists dust mites, mould and bacteria
  • Sleepers up to 139.7kg (22st) per side

Not ideal for

  • Sleepers who prefer a very soft feel - this medium topper offers a balance of comfort and support rather than a deep sink
  • Those with a worn-out or sagging mattress - a topper adds comfort but cannot fix a mattress that no longer supports you

Inside This Topper

Aerocell Foam Top Layer
What it is: A comfort layer of open-cell foam, where the cells are open and connected so air can pass freely through the material.
How it helps you sleep: It moulds gently to your shape for pressure relief, while the open structure stops heat building up the way it can with traditional memory foam.

Octaspring Technology
What it is: Dormeo's own foam spring system - hundreds of individual, honeycomb-shaped foam springs that each move independently and in three dimensions.
How it helps you sleep: Each spring responds to the weight above it, so the topper adapts to your body's contours and spreads pressure evenly, while the open spring structure circulates air as you move.

3 Body Zones
What it is: Octasprings of different strengths arranged into zones from head to toe, firmer around the lumbar region and softer around the head, shoulders and legs.
How it helps you sleep: Targeted support where your body needs it most helps your spine keep its natural shape and reduces pressure at the hips and shoulders.

Ecocell Foam Base
What it is: Dormeo's own permanently elastic foam with a three-dimensional open cell structure, used as the supportive base layer.
How it helps you sleep: It gives the topper a stable foundation and reduces pressure points, while its structure lets air keep moving through the topper and holds its performance over time.

Octavent Air System
What it is: A ventilation system that pairs the Octaspring core with a breathable cover, so your movements push warm, humid air out through the sides of the topper and draw fresh air back in.
How it helps you sleep: Constant airflow makes the topper 8x more breathable than traditional memory foam and helps cool your bed by up to 3°C, for a fresher, more comfortable night.

Smart Performance Cover
What it is: A removable cover with hundreds of small comfort pockets built into the surface, machine washable at 40°C.
How it helps you sleep: It adds a soft, cushioned feel and helps hot air escape from the topper, and because it can be washed at home, it is easy to keep the sleep surface fresh and hygienic.

Hypoallergenic Treatment
What it is: An environmentally friendly treatment that protects the topper against bacteria, mould and dust mites.
How it helps you sleep: It creates a cleaner, healthier sleep environment, reducing exposure to common allergy triggers such as dust mites.

Anti-Slip Base
What it is: A non-slip underside that grips the mattress beneath, with no straps or fitted skirt. A fitted sheet placed over both the topper and the mattress is recommended.
How it helps you sleep: It helps the topper stay in position on your mattress through the night, so you can enjoy consistent support without constantly repositioning it.

Specification

FEATURE DETAIL
Brand Dormeo
Category Mattress Topper
Model Octasmart Classic
Fill Type Aerocell Foam, Octaspring Foam Springs and Ecocell Foam
Topper Depth 7cm
Firmness Medium
Cooling Yes - Octavent Air System
Hypoallergenic Yes
Anti-Dust Mite Yes
Machine Washable Yes - removable cover at 40°C
Care Instructions Remove the cover and machine wash at 40°C
Compatible Mattress Types All mattress types
Maximum User Weight 139.7kg (22st) per side
Sizes Available Single / Double / King Size / Super King Size
Warranty 8 years

Dimensions

SIZE DIMENSIONS
Single 90cm x 190cm (3ft x 6ft3)
Double 135cm x 190cm (4ft6 x 6ft3)
King Size 150cm x 200cm (5ft x 6ft6)
Super King Size 180cm x 200cm (6ft x 6ft6)

How it Compares

Vs a softer topper: A softer topper gives a deeper, more cushioned sink, which some lightweight side sleepers prefer. The Octasmart Classic's medium feel balances cushioning with support, so it suits a wider range of sleeping positions and is a better choice if you want comfort without losing support. Compare feels across our full range of mattress toppers.

Vs a memory foam topper: Solid memory foam toppers mould closely to the body but can trap heat, which may disturb hot sleepers. The Octasmart Classic uses open-cell foams and an Octaspring core that circulates air as you move, giving you contouring pressure relief with a noticeably cooler, more breathable feel.

Vs buying a new mattress: A topper is a cost-effective way to add comfort and freshen up a mattress that is still structurally sound. If your mattress is sagging, has lost its support or is causing aches and pains, a topper will not fix the problem, and a new mattress is likely to be the better long-term investment.

8 Year Warranty

The Octasmart Classic is backed by Dormeo's 8-year warranty against defects in materials and workmanship. It is a long warranty for a mattress topper, reflecting the durability of the permanently elastic foams and Octaspring technology at its core.

Ready to Upgrade Your Sleep?

The Dormeo Octasmart Classic brings zoned Octaspring support, pressure-relieving foam and a cooler sleep surface to the mattress you already own. If you're looking to refresh an older mattress, sleep hot, or want balanced support whether you sleep on your side, back or front, this is the one to consider.

Select your size above and add to basket. Free UK delivery included.

Not sure which topper is right for you? See our full range of mattress toppers to compare fill types, depths and firmness levels.

What's Included?

ITEM INCLUDED?
Mattress Topper Yes

About The Brand

Dormeo

Dormeo, the home of a great night’s sleep

With over 20 years of experience, Dormeo is now one of Europe's most trusted bedding brands. Their innovative Octaspring technology is genuinely ground-breaking and exclusive to Dormeo. This unique, award-winning system of individually pocketed springs arranged in a three-dimensional configuration is designed to supply support and comfort while also helping to distribute weight evenly across the surface of the mattress.

At Land of Beds, we are proud to be able to offer our customers high-quality, luxurious products that are affordable and accessible to all consumers. Our relationship with Dormeo dates back ten years. Our independent customer reviews rate Dormeo products 4.7 out of 5, giving us the confidence to provide Dormeo with our seal of approval and our customers' valuable insight when making informed purchasing decisions.

Dormeo is so confident in its products that it offers a lengthy guarantee. Additionally, they provide a generous sleep trial period on many of their products, allowing you to test them at home before making a final decision. (Terms and conditions apply.)

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Rated Excellent
Review stars
4.4/5
(29 Reviews)
  • Quality of product 4.6 / 5
  • Value for money 4.6 / 5
  • 5 Star 20
  • 4 Star 6
  • 3 Star 1
  • 2 Star 0
  • 1 Star 2
View all ratings
5
4
3
2
1
  • Review stars

    Delivered on time. Nice quality

    read more
    Mrs Karen Wyatt
    02/05/2026
  • Review stars

    Ordering was easy, delivery was prompt. Mattress is as expected very comfy, there is no roll together and hopefully it will outlast me

    read more
    Kathryn Terry
    09/04/2026
  • Review stars

    Had a good nights sleep, Comfy, Little more needs to be said about the product.

    read more
    Keith Robert John
    13/03/2026
  • Review stars

    Very good buy

    read more
    Brian Phillips
    10/03/2026
  • Review stars

    Very comfortable

    read more
    L B
    28/02/2026
  • Review stars

    Gives me a good night's sleep, the only problem l have with it,is,. it wont stay in place. Should have brought one that has straps

    read more
    Gerry
    23/02/2026
  • Review stars

    Finally a good night's sleep 😴 😊

    read more
    Sarah
    14/02/2026
  • Review stars

    My partner has had the best nights sleep since using the topper, she notes that she does not suffer now from regular cramps. My only comment is that the topper moves even though we have fitted sheets are deep enough to cover the topper and mattress. Having some sought of elasticated restraints to stop it from moving would greatly enhance performance

    read more
    Tim Bennett
    21/01/2026
  • Review stars

    A very good mattress which has improved my sleep thank you

    read more
    Janice Brookes
    29/08/2025

Customer Questions & Answers

  • What is the depth of this mattress topper?

    This mattress topper is 7cm deep.

  • What is this mattress topper made from?

    This mattress topper is made from Octaspring Foam springs, Aerocell Foam and Ecocell foam.

  • Do I put this over my fitted sheet or under it?

    This mattress topper works best when it is directly on the mattress.

  • Is this mattress topper like a fitted sheet or does it have straps?

    This mattress topper sits atop your mattress and is kept in place with the help of your fitted sheet.

  • How long will this mattress topper last?

    This mattress topper has a warranty of 8 years.

  • My mattress is too firm, will this mattress topper help?

    Mattress toppers are designed to offer an extra comfort layer and so can help your mattress feel softer.

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More to Explore

Select Size

Single
3ft x 6ft 3in
£156
Save £203
RRP £359
Was £169
Double
4ft 6in x 6ft 3in
£175
Save £224
RRP £399
Was £189
King Size
5ft x 6ft 6in
£229
Save £290
RRP £519
Was £249
Super King Size
6ft x 6ft 6in
£277
Save £362
RRP £639
Was £299

Size Guide

Name
Imperial (ft)
width x length
Metric (cm)
width x length
Small Single
2ft 6in x 6ft 3in
75 x 190cm
Small Single Long
2ft 6in x 6ft 6in
75 x 200cm
Single
3ft x 6ft 3in
90 x 190cm
Long single
3ft x 6ft 6in
90 x 200cm
Small Double
4ft x 6ft 3in
120 x 190cm
Small Double Long
4ft x 6ft 6in
120 x 200cm
Double
4ft 6in x 6ft 3in
135 x 190cm
Long double
4ft 6in x 6ft 6in
135 x 200cm
European Double
4ft 8in x 6ft 6in
140 x 200cm
King Size
5ft x 6ft 6in
150 x 200cm
King Size Zip & Link
2 x 2ft 6in x 6ft 6in
2 x 75 x 200cm
European King Size
5ft 3in x 6ft 6in
160 x 200cm
Super King Size
6ft x 6ft 6in
180 x 200cm
Super King Size Zip & Link
2 x 3ft x 6ft 6in
2 x 90 x 200cm
Small Emperor
6ft 6in x 6ft 6in
200 x 200cm
Small Emperor Zip & Link
2 x 3ft 3in x 6ft 6in
2 x 100 x 200cm
Emperor
7ft x 7ft
215 x 215cm
Emperor Zip & Link
2 x 3ft 6in x 7ft
2 x 107.5 x 215cm

Custom bed sizes

Made to measure mattresses and divan bases are available – please call 01928 242829.

Price Match Request


For full Terms and Conditions please click here.

Delivery

Our skilled drivers deliver throughout the UK and will deliver straight to your home. Free doorstep delivery is available on many products and you can also choose delivery to room of choice for an additional fee.

  • Free doorstep delivery across the UK on all orders over £100.
  • Skilled drivers will deliver straight to your home.
  • Option to choose delivery to a room of your choice (small fee applies).
  • Select a delivery day that suits you, check availability by entering your postcode.

Frequently Asked Questions

  • How much is delivery?

    We offer free delivery to most of the mainland UK for orders over £100; there are applicable charges for deliveries to the highlands or far out UK, which can be found by putting your postcode into the delivery section on the product page. For orders under £100, there is a £10 charge.

  • How long does delivery take?

    Once you select the required product, an approximate delivery time will be quoted on the product page before adding the item to your basket. During checkout, you will either be given the option to select your date, or we will state an estimated time for delivery. Once you have placed your order, we will contact you to book a date within the timeframe quoted.

  • Will I be contacted beforehand to arrange a delivery slot?

    Once you have placed an order, our delivery team will contact you directly to arrange a suitable delivery slot, either via email, call, or text message.

  • Can I choose my delivery day?

    If the product is available for next-day delivery, you can select a date at checkout. For all other products, you will be presented with an estimated timeframe for delivery. After placing your order, our delivery team will contact you via e-mail, text or call to arrange a suitable delivery day/time.

Read all our Delivery FAQs

Returns

We have an easy returns policy: If you change your mind, we're happy to accept returns within 14 days of you receiving your product, as long as they are unused and unassembled. However, for hygiene reasons, we can't take back products that have been slept on, unless there's a fault.

Custom-made products can only be returned if they are faulty.

Please take a look at our Terms & Conditions.

Frequently Asked Questions

  • Can I return a mattress I've slept on?

    Normally, mattresses can only be returned if they're unused within 14 days. But if your mattress has a trial period, please refer to the mattress trial information page for further details.

  • How long do I have to return an item I've purchased online?

    You have 14 days to return an item if bought online, subject to the item not being used or assembled. Please note, if you wish to inspect a mattress, please ensure the protective outer plastic packaging is not removed, as this may affect your right to return due to health and hygiene reasons. Any product that is made to order/customised cannot be returned unless faulty.

  • Do I have to pay for the return?

    To return your product, you can either arrange the return yourself, or we can happily arrange it on your behalf for a charge, which will be deducted from your refund. The collection charge covers the expenses involved in picking up the item from your location and safely bringing it back to our warehouse. For bedding items, the amount is £20, and for large/bulky items, charges start from £95 (depending on the product/postcode).

  • Can I return a part or fully assembled item?

    Unfortunately, once an item is assembled, whether partially or fully, we can't accept returns unless the item is faulty.

Read all our Returns FAQs

Delivery & Returns FAQs

Delivery

Our skilled drivers deliver throughout the UK and will deliver straight to your home. Free doorstep delivery is available on many products and you can also choose delivery to room of choice for an additional fee.

  • Free doorstep delivery across the UK on all orders over £100.
  • Skilled drivers will deliver straight to your home.
  • Option to choose delivery to a room of your choice (small fee applies).
  • Select a delivery day that suits you, check availability by entering your postcode.

Frequently Asked Questions

  • How much is delivery?

    We offer free delivery to most of the mainland UK for orders over £100; there are applicable charges for deliveries to the highlands or far out UK, which can be found by putting your postcode into the delivery section on the product page. For orders under £100, there is a £10 charge.

  • How long does delivery take?

    Once you select the required product, an approximate delivery time will be quoted on the product page before adding the item to your basket. During checkout, you will either be given the option to select your date, or we will state an estimated time for delivery. Once you have placed your order, we will contact you to book a date within the timeframe quoted.

  • Will I be contacted beforehand to arrange a delivery slot?

    Once you have placed an order, our delivery team will contact you directly to arrange a suitable delivery slot, either via email, call, or text message.

  • Can I choose my delivery day?

    If the product is available for next-day delivery, you can select a date at checkout. For all other products, you will be presented with an estimated timeframe for delivery. After placing your order, our delivery team will contact you via e-mail, text or call to arrange a suitable delivery day/time.

Read all our Delivery FAQs

Returns

We have an easy returns policy: If you change your mind, we're happy to accept returns within 14 days of you receiving your product, as long as they are unused and unassembled. However, for hygiene reasons, we can't take back products that have been slept on, unless there's a fault.

Custom-made products can only be returned if they are faulty.

Please take a look at our Terms & Conditions.

Frequently Asked Questions

  • Can I return a mattress I've slept on?

    Normally, mattresses can only be returned if they're unused within 14 days. But if your mattress has a trial period, please refer to the mattress trial information page for further details.

  • How long do I have to return an item I've purchased online?

    You have 14 days to return an item if bought online, subject to the item not being used or assembled. Please note, if you wish to inspect a mattress, please ensure the protective outer plastic packaging is not removed, as this may affect your right to return due to health and hygiene reasons. Any product that is made to order/customised cannot be returned unless faulty.

  • Do I have to pay for the return?

    To return your product, you can either arrange the return yourself, or we can happily arrange it on your behalf for a charge, which will be deducted from your refund. The collection charge covers the expenses involved in picking up the item from your location and safely bringing it back to our warehouse. For bedding items, the amount is £20, and for large/bulky items, charges start from £95 (depending on the product/postcode).

  • Can I return a part or fully assembled item?

    Unfortunately, once an item is assembled, whether partially or fully, we can't accept returns unless the item is faulty.

Read all our Returns FAQs

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