Available 
SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress
from £509-£619.
£509-£619
Sizes tracked: Double, King Size, Super King
Sleep guide
How to choose a mattress if you share a bed
Compare shared-bed mattresses by firmness, motion isolation, adjustable-bed fit and value, using three pocket sprung examples from Mattress Online.
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Last verified: 2026-07-24
Why couples often disagree on mattress feel
When two people share a bed, the biggest issue is rarely the mattress category alone; it is how each sleeper’s position, weight and comfort preference interact. One partner may want a firmer feel and the other may prefer a medium surface, so the best starting point is to compare both sleepers’ priorities before looking at product pages. In this shortlist, the SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress is listed as firm and the two Sleepeezee Cool Motion models are medium, which makes the trade-off very clear.
What to look for in a shared mattress
For couples, motion isolation is one of the most useful comparison points because it affects how much movement you feel when a partner turns or gets in and out of bed. Pocket springs are a sensible starting point here because they can offer more responsive support than a basic open-coil design, while the SleepSoul model adds gel foam and the Sleepeezee examples use memory foam or wool comfort layers. It is also worth checking depth, bedding fit and frame compatibility on the live product page, especially if you use a topper or a bed base with tighter clearance.
How to compromise on firmness
A shared bed often works best when both sleepers can accept the same support level without feeling forced into a mattress that suits only one person. The firm SleepSoul Space 4000 may suit couples who want stronger support and a taller build, while the medium Sleepeezee Cool Motion Memory 1000 and Cool Motion Natural 1000 are easier starting points if one partner wants a softer landing. Medium is often the safest compromise when sleep positions differ, but it is still important to check whether the comfort layer and spring count match the feel you prefer.
When to size up
Size matters as much as construction when two people share a bed, especially if one partner is easily disturbed by movement or simply wants more personal space. Mattress Online highlights depth as important for bedding and bed-frame suitability, so checking the live size options and base fit is sensible before deciding whether a double, king or super king is the better call. The SleepSoul Space 4000 is shown in larger sizes such as double, king size and super king, while the Sleepeezee adjustable examples are positioned for smaller format use, so make sure the size you need is actually available on the retailer page.
What the comparison evidence suggests
The shortlist is useful because it lets you compare three different shared-bed angles without pretending there is one universal winner. Owner ratings are positive across the set, with the SleepSoul Space 4000 at 4.7/5 from 32 reviews, the Sleepeezee Cool Motion Memory 1000 at 4.7/5 from 135 reviews and the Cool Motion Natural 1000 at 4.6/5 from 186 reviews, but those are retailer ratings rather than independent lab results. The current prices also show a meaningful spread, from £419 for the Sleepeezee Natural model to £619 at the top end of the SleepSoul range, so couples should compare price against firmness, adjustable-bed fit, trial period and warranty rather than focusing on a single star score.
How to turn the shortlist into a buying decision
If you want firmer support and a more substantial spec, the SleepSoul Space 4000 stands out with 4000 pocket springs, gel foam, a 10-year warranty and a 100-night comfort trial, but it is also the priciest example at £509-£619. If adjustable-bed compatibility is your main need, the Sleepeezee Cool Motion Memory 1000 and Cool Motion Natural 1000 are the clearer fit: both are medium, both carry a 100-night comfort trial and both are set up for adjustable bases, with the Natural model starting lower at £419. For couples comparing value, the key question is whether you are paying extra for firmer support and a taller build, or saving money by choosing a medium adjustable option that suits both sleepers and the frame you already have.
Mattresses to use as comparison examples
Available 
Sleepeezee Cool Motion Memory 1000 Pocket Adjustable Mattress, Adjustable
from £475.
£475
Sizes tracked: Small Single, Single
Available 
Sleepeezee Cool Motion Natural 1000 Pocket Adjustable Mattress, Adjustable
from £419.
£419
Sizes tracked: Small Single, Single
Retailer details used
Last checked 2026-07-24. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
- SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress | Mattress Onlineproduct-page evidence for SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress
- Sleepeezee Cool Motion Memory 1000 Pocket Adjustable Mattress | Mattress Onlineproduct-page evidence for Sleepeezee Cool Motion Memory 1000 Pocket Adjustable Mattress, Adjustable
- Sleepeezee Cool Motion Natural 1000 Pocket Adjustable Mattress | Mattress Onlineproduct-page evidence for Sleepeezee Cool Motion Natural 1000 Pocket Adjustable Mattress, Adjustable
- Sleep Foundation best mattresses for couplescouples mattress buyer criteria
- Sleep Foundation motion isolation methodologymotion isolation criteria
- Tom’s Guide motion isolation explainerconsumer motion isolation guidance
Helpful next reads
Use these related mattresses guides and reviews to turn the advice into a practical shortlist.
Firmness questions
What mattress type is best for couples who share a bed?
Pocket sprung and hybrid-style mattresses are a practical starting point because they can balance support and movement control. In this shortlist, the pocket sprung SleepSoul and Sleepeezee models also add different comfort layers, which is useful when two sleepers want different feels.
Should couples choose a firmer or medium mattress?
It depends on both sleepers, but medium is often the easier compromise when preferences differ. A firmer option like the SleepSoul Space 4000 may suit couples who want stronger support, while the medium Sleepeezee models are more flexible if one partner dislikes a hard surface.
When should two people size up from double to king?
If partner movement is noticeable, or if either sleeper feels cramped, moving up a size can make a real difference. It is also worth checking whether the mattress depth and base fit work with your frame, bedding and any topper you already use.
Are adjustable-bed mattresses a better option for couples?
They can be, especially if one or both sleepers want more flexible positioning. The Sleepeezee Cool Motion Memory 1000 and Cool Motion Natural 1000 are both positioned for adjustable beds, so they are worth a look if your base moves or you want that flexibility built in.
How should shoppers use retailer ratings and review counts when comparing mattresses?
Treat ratings and review counts as helpful shopper signals, not proof of independent evidence. The Sleepeezee Natural model has the largest review count in this set, which can give a broader sense of owner feedback, but you should still compare firmness, construction, trial period and guarantee.