Horizon Adventurer Memory 1000 Pocket Mattress Roomshot Which AwardHorizon Adventurer Memory 1000 Pocket Mattress Undressed Roomshot Which AwardHorizon Adventurer Memory 1000 Pocket Mattress Full Which AwardHorizon Adventurer Memory 1000 Pocket Mattress Corner Which AwardHorizon Adventurer Memory 1000 Pocket Mattress Roomshot Which AwardHorizon Adventurer Memory 1000 Pocket Mattress Undressed Roomshot Which Award

Horizon Adventurer 1000 Pocket Memory Mattress

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From£279.95

up to

45% off

Comfort trial

Comfort fillings

Firmness rating

Support system

Step into the future of sleep with the Adventurer! This stellar mattress features cooling memory foam and medium-firm, orthopaedic support for your back. Welcome to years of dreamy sleep.

Reasons to Buy

Memory Foam
Memory Foam

Memory foam creates a cushioned feel by cradling to your unique shape. Enhancing the remarkable comfort, the foam has a sumptuous feel, delivering a cosy sleep.

Pocket Springs
Pocket Springs

Individualised springs encased in cloth pockets. Expertly adapting to movement to distribute personalised support to each part of your body.

Knitted cover
Knitted cover

A sumptuously soft finish that provides additional cosiness and warmth. Knitted covers enhance airflow and are incredibly breathable. So, you can enjoy a cooler snooze.

Reinforced mattress edge
Reinforced mattress edge

Durable edge-to-edge support provides a maximised sleeping surface for a more secure sleep. Sit and lay comfortably right to the very edge with zero 'roll-off' sensation.

No roll-together
No roll-together

Special design made to create your own personal sleep zone. No distractions or disturbances when your partner moves. So you can enjoy an undisturbed rest.

Pressure relief
Pressure relief

Offering a soothing night's rest by evenly distributing your body weight across the mattress. The pressure point relief provides the ultimate relaxation needed for a deep slumber.

Hypoallergenic
Hypoallergenic

Free of allergens for a cleaner, healthier sleep. No allergenic materials were used so you can enjoy an undisturbed rest without the risk of allergy reactions or respiratory problems.

Medium to Firm
Medium to Firm

Firmer than a medium mattress for extra support

25cm deep
25cm deep

About 9.8 inches deep. Depth is an important factor when buying a mattress as it can affect the suitability for particular bedding, mattress toppers and bed frames.

Single-sided
Single-sided

With a single-sided mattress, there's no need to flip. Simply rotate every few months to care for your mattress. Fuss free mattress maintenance!

Includes turning handles
Includes turning handles

Stitched into the mattress border, turning handles are there for easier moving and turning. When caring for your mattress, simply use the handles provided for ease of use.

Rolled-up
Rolled-up

A rolled-up mattress is efficiently packaged for easy manoeuvring. Because of its smaller, compact design, less delivery vans are needed, providing a great environmentally-friendly option.

5 Year Guarantee
5 Year Guarantee

For your peace of mind

Fire Resistant
Fire Resistant

This product conforms to BS7177: 2008, for use at home

Description

Journey into the future of sleep with the Horizon Adventurer 1000 Pocket Memory Mattress!

Bamboo memory foam

A layer of bamboo memory foam moulds around your unique shape, helping to relieve built up pressure on your body and ease aches. Infused with bamboo, the foam is highly breathable to help dispel heat and moisture. Promoting a cooler, fresher feel than traditional memory foam.

Completing the comfort of this mattress is a layer of high density foam. Durable and cushioning, this layer offers ideal comfort and also helps to reduce motion transfer. So you can sleep undisturbed by tossing and turning when sharing the bed.

Orthopaedic care

The Adventurer is orthopaedic. This means it encourages good postural alignment as you sleep. It's perfect if you're looking for enhanced care to support your back.

Personalised support

Nestled underneath this memory layer, 1000 pocket springs work hard to provide exactly the right support for each area of your body. The support is personalised to you, and helps reduce motion transfer between you and your partner.

Perfectly balanced comfort

If you're looking for that best-of-both-worlds feel, search no more. We rate the Adventurer medium-firm. This makes it a great choice if you want plenty of support without compromising on comfort.

Prefer a firmer feel? Take a look at the Horizon Discovery!

Healthy sleep

The Adventurer is hypoallergenic - so it's ideal if you suffer from allergies. Helping you sleep undisturbed with reduced skin irritation.

More space to sleep

The more space we have, the better sleep we get. The mattress borders are reinforced with extra-firm sturdy foam. Not only does this stop roll-off, but you can sleep right to the very edge!

Made for busy lives

This easy-care mattress is a breeze to keep in great condition. Plus, since it's single-sided, you don't need to flip it over. All you need to do is rotate it once every 3 months, using the built-in turning handles.

Planet-friendly design

Since the Adventurer arrives rolled-up, we can fit more into each delivery. That means we can reduce our carbon emissions and help protect our world for generations to come.

Easier set-up

Rolled mattresses are easier to move around your home - especially if you have narrow stairs. Once you've placed your mattress on your bed, simply unwrap and allow it to expand. You can sleep on it in 3-4 hours.

Journey into the future of sleep

The future of sleep is here. Enjoy cool comfort and ortho support as soon as tomorrow the Adventurer!

Disclaimer: To keep your mattress in perfect condition, you should unroll your mattress within 3 months of it being delivered. This ensures that your new mattress will unroll smoothly and it will keep it clean and fresh.

Benefits

  • Exclusive to Mattress Online
  • A hybrid memory foam mattress
  • Orthopaedic support for enhanced backcare
  • Bamboo infused memory foam is cooling and breathable
  • Medium-firm feel for perfectly-balanced comfort
  • Soothing pressure relief for aches and pains
  • 1000 pocket springs give correct support for your body
  • Sturdy mattress border gives you maximum sleeping space
  • No roll-off or roll-together
  • Smooth, soft-knit cover
  • Hypoallergenic for your peace of mind
  • Single-sided - easier to care for
  • Turning handles ensure easier moving and handling
  • Arrives rolled up for faster delivery
  • Depth: 25cm
  • 5 Year Guarantee
  • The mattress cover is guaranteed for 12 months

    Weights: Single: 20.5kg, Small Double: 24.1kg, Double: 30kg, King Size: 35.2kg, Superking: 43kg

60-Night Comfort Trial

This mattress comes with a 60-Night Comfort Trial - like all of our mattresses!

The trial lets you test your mattress for up to 60 nights. If it's not quite right for you, you can exchange it for a new one.

It can take some time to get used to a new mattress, which is why we ask you to sleep on your mattress for 30 nights. If you're not happy with the feel after 30 nights, simply contact our Customer Service Team, and we'll arrange a mattress exchange.

Click here for more info about our 60-Night Comfort Trial.

Videos

Horizon Adventurer 1000 Pocket Memory Mattress

Specification

FirmnessMedium to firm
Comfort fillingsMemory Foam
Support systemPocket Springs
Pocket spring count1000
Edge supportYes
CoverKnitted cover
Allergy careHypoallergenic
Pressure reliefYes
No roll-togetherYes
Turning handlesYes
Rolled-upYes
Single-sidedYes
Guarantee5 years
Fire resistanceConforms to BS7177: 2008, for use at home
DownloadsHorizon Product Care and Guarantee

Dimensions

SizeWidthLengthDepth
Single90cm190cm25cm
Small Double120cm190cm25cm
Double135cm190cm25cm
King Size150cm200cm25cm
Superking180cm200cm25cm

Please allow for a tolerance of +/- 2cm

Delivery

The following delivery methods apply to mainland England and most of Scotland, Wales and Northern Ireland. Please read our delivery page for more information.

Next day delivery (weekdays only)

Order before

FREE

Weekday of your choice

Order up to 60 days ahead

FREE

Weekend

On Saturday or Sunday of your choice

£17.50

Delivery to the front door of your building

Free upgrade for King Size and Superking to your room of choice

Yes

Two-hour delivery time slot

We’ll let you know on the day before your delivery

Yes

Call to let you know we’re on our way

On your delivery day

Yes

Delivery to your room of choice

Free upgrade for King Size and Superking

£20.00

Mattress recycling

We'll take away your old mattress

£35.00

Delivery is on an all-day service, 7am - 8pm for mainland England and most of Scotland, Wales and Northern Ireland.

Need further information? Please visit our Delivery page.

Reviews

4.6/5

out of 144 reviews onTrustpilot logo

Product review stars

Customer Reviews Summary

summarised by AI

5 starsKarin
7 December 2025

Verified Purchase

5 starsSam
6 December 2025

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5 starsTony
27 November 2025

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4 starsMalik
26 November 2025

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5 starsBarry
12 November 2025

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5 starsEleanor
10 November 2025

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1 starsAndre
10 November 2025

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5 starsElaine
30 October 2025

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5 starsTom
16 October 2025

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5 starsDaniel
9 October 2025

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