Emma vs Simba vs REM-Fit
Two of Britain's biggest bed-in-a-box names, compared honestly on price, springs, foam depth and cooling, alongside a hybrid that matches them for feel, with more pocket springs, a deeper comfort layer and a longer guarantee. Every figure below is sourced and verified.
The 20-second verdict
Emma and Simba are both excellent medium hybrids. You'll just pay a premium for the name. A REM-Fit 3000 Supreme delivers the same medium feel and open-cell cooling, on 3000 tall pocket springs with a 5cm zoned comfort layer and a 15-year guarantee instead of 10, at £479.99 for a king, around £400 less than either rival.
Three medium hybrids, side by side
Each brand's mainstream hybrid, UK king size, typical sale price (verified June 2026).
- ✓ Graphite-cooled comfort foam
- ✓ 200-night trial
- • 10-year guarantee
- • 25cm · medium feel
- • Spring count not published
- ✓ 3000 tall dual-layer pocket springs
- ✓ 5cm zoned open-cell comfort layer
- ✓ 200-night trial
- ✓ 15-year guarantee
- ✓ Free 2-man, room-of-choice delivery
- ✓ Graphite Simbatex foam
- ✓ 200-night trial
- • 10-year guarantee
- • 25cm · medium-firm feel
- • ~1,900 25mm micro-springs + base
The full spec sheet
Where a rival genuinely matches or beats us, we say so. "Tie" means no meaningful difference for most sleepers.
| Feature | EmmaOriginal Pro | REM-Fit3000 Supreme | SimbaHybrid |
|---|---|---|---|
| Price (UK king, typical) | £869 | £479.99 Best price | £899 |
| Feel | Medium | Medium (6/10) | Medium-firm |
| Total depth | 25cm | 25cm Tie | 25cm |
| Pocket springs | Edge-to-edge zoned springs (count not published) | 3000 dual-layer, tall 15cm pocket springs Most springs | ~1,900 25mm Aerocoil micro-springs + up to 1,000 base |
| Comfort foam layer | Multiple foam layers (single depth not specified) | 5cm zoned open-cell comfort foam confirm vs rivals | Simbatex + foam (single depth not specified) |
| Cooling | Graphite ThermoSync / Airgocell | Open-cell memory foam Tie | Graphite-infused Simbatex |
| Sleep trial | 200 nights | Up to 200 nights Tie | 200 nights |
| Guarantee | 10 years | 15 years Longest | 10 years |
| Foam certification | CertiPUR | CertiPUR Tie | CertiPUR |
| Returns | Free collection & refund | Free collection · donated to British Heart Foundation | Free collection & refund |
Spring counts are measured differently between brands: REM-Fit and the headline Simba figure count full and micro pocket springs respectively, while Emma does not publish a number. Simba's Aerocoil are 25mm micro-springs near the surface rather than full-height pocket springs. REM-Fit publishes its full spring count in every size; where a brand doesn't, we've compared only on the specs it makes public.
Who wins each category
Price & value
REM-FitThe headline. For the same medium-hybrid construction and feel, REM-Fit sits well below either rival's equivalent king. If value matters, it isn't close.
Springs & support
REM-FitThe 3000 Supreme uses 3000 tall, full-height dual-layer pocket springs. Simba's Hybrid leans on ~1,900 25mm Aerocoil micro-springs over a base layer, and Emma doesn't publish a count. On full pocket-spring support, REM-Fit leads.
Comfort layer
REM-FitREM-Fit publishes a 5cm zoned open-cell comfort layer that cushions hips and shoulders. Emma and Simba use multi-layer foam stacks but don't break out a single comfort-layer depth, so REM-Fit is the only one giving you a clear number.
Guarantee
REM-FitREM-Fit covers every mattress for 15 years. Emma and Simba both stop at 10, five fewer years on a purchase you'll keep the best part of a decade.
Comfort & feel
TieAll three are medium hybrids built to suit most sleepers. Simba sits a touch firmer; Emma and REM-Fit are a true medium. Feel is personal, which is why all three include a long home trial.
Cooling
TieEmma uses graphite ThermoSync, Simba uses graphite Simbatex, REM-Fit uses open-cell memory foam. Different routes to the same result, all sleep cooler than traditional memory foam.
Brand & awards
TieAll three are decorated: Simba took Product of the Year 2026, Emma is among the UK's most-awarded brands, and REM-Fit is Good Housekeeping Approved 2026 with a 4.2/5 Trustpilot score. Choose on substance.
Which one is right for you?
We'd rather you buy the right mattress than the wrong REM-Fit. The straight answer:
Choose Emma if…
You want a soft, cushioned, hugging feel and you're happy to pay a premium for the brand.
Choose Simba if…
You prefer a firmer, more responsive surface with that bouncy Aerocoil micro-spring feel.
Choose REM-Fit if…
You want the same medium hybrid comfort as the big names with more full-height springs, a deeper comfort layer, the longest guarantee, and a keener price.
Up to 200-Night Trial
A risk-free sleep trial on all our mattresses.
Free Delivery
Free room-of-choice delivery. Old mattress disposal available.
15-Year Guarantee
We're so confident, we offer a 15-year guarantee.
Same comfort category. Less money.
Try the REM-Fit 3000 Supreme for up to 200 nights. If it's not right, we collect it free and refund you in full.
Emma vs Simba vs REM-Fit FAQs
Is Emma or Simba better?
They're closely matched medium hybrids. Simba runs slightly firmer with a bouncier micro-spring feel; Emma is a softer, more cushioned medium. Both carry a 200-night trial and a 10-year guarantee at a similar price, so it comes down to whether you prefer a firmer or softer surface.
Which has more pocket springs?
The REM-Fit 3000 Supreme uses 3000 tall dual-layer pocket springs. Simba's Hybrid uses around 1,900 25mm Aerocoil micro-springs over a base layer, and Emma does not publish a spring count. For full-height pocket-spring support, REM-Fit leads.
Why is the REM-Fit cheaper?
REM-Fit sells direct and doesn't carry the heavy national advertising spend of the larger brands, reflected in the price, not the build. You still get a medium hybrid with 3000 dual-layer pocket springs, a 5cm open-cell comfort layer, a 200-night trial and a 15-year guarantee.
Do all three sleep cool?
Yes. Emma uses graphite-infused foam, Simba uses graphite Simbatex, and REM-Fit uses open-cell memory foam. All three improve airflow over traditional memory foam.
Which has the best guarantee and trial?
All three offer a 200-night home trial with free collection on return. REM-Fit leads on the guarantee with 15 years, versus 10 from Emma and Simba.
