Simba's two best-selling mattresses share a name, a medium-firm feel and a 200-night trial, and differ mainly in how many mini pocket springs and foam layers sit inside. Here is what the extra depth of the Hybrid Pro buys you over the Hybrid, and where a REM-Fit hybrid built on tall pocket springs fits against both.
Last updated: August 2026. Specifications checked against Simba's own product pages.
Quick answer: Simba Hybrid is best for sleepers who want a medium-firm, bouncy surface at the entry point of the Simba range: 25 cm deep with up to 1,900 mini pocket springs over foam. Simba Hybrid Pro is best for sleepers who want the same feel with more of everything: 28 cm deep, up to 4,800 mini pocket springs in a king size, and a wool top layer. The REM-Fit 5000 Lux Elite is the third option: a medium-firm 25 cm hybrid built on 5000 tall premium pocket springs in two layers running the full depth of the mattress, topped with deep open-cell memory foam that lets air move through it rather than trapping heat, Good Housekeeping Approved 2026, with a 100-night trial (200 with a protector) and a 15-year guarantee.
Simba Hybrid vs Hybrid Pro vs REM-Fit: the full spec sheet
Each brand's model, UK sizes, from the specifications each brand publishes. Where a brand does not publish a figure, the cell says so rather than guessing.
| Feature | SimbaHybrid | SimbaHybrid Pro | REM-Fit5000 Lux Elite |
|---|---|---|---|
| Mattress type | Hybrid, mini pocket springs over foam | Hybrid, more layers of mini pocket springs and foam, wool top | Hybrid, open-cell memory foam over tall pocket springs |
| Springs | Up to 1,900 mini pocket springs, 25 mm tall (king) | Up to 4,800 mini pocket springs (king) | 5000 tall premium pocket springs in two layers, running the full depth of the mattress Most springs |
| Foam type and depth | Foam with graphite added, a core foam and a zoned foam base; single depths not published | Eight layers including a wool top layer and cooling foam; single depths not published | Deep open-cell memory foam, made with an open cell structure so air passes through the foam |
| Firmness (out of 10) | Medium-firm, not rated out of 10 | Medium-firm, not rated out of 10 | Medium-firm, 7.5 out of 10, multi-zoned |
| Height | 25 cm | 28 cm | 25 cm |
| Sleep trial | 200 nights | 200 nights | 100 nights, 200 with a protector |
| Guarantee | 10 years | 10 years | 15 years Longest |
| Delivery | Free next-day (UK mainland, order by 1pm) | Free, often in a box | Free, 2 to 5 days |
| Key award | Good Housekeeping Approved 2026 | Product of the Year 2026 badge shown on product page | Good Housekeeping Approved 2026; Pocket 1000 is Good Housekeeping Winner 2026 |
| Foam certification | CertiPUR | Not stated on product page | CertiPUR |
Both Simbas count mini pocket springs, 25 mm tall on the Hybrid, that sit near the surface as comfort layers, so the support underneath comes from foam in both. The Pro's higher number comes from adding more layers of them. REM-Fit counts tall pocket springs that run the full depth of the mattress across two layers. Compare the construction, not just the number.
Who should buy the Simba Hybrid?
Buy the Simba Hybrid if you want Simba's medium-firm, bouncy feel at the entry point of the range and want it tomorrow. It is the lighter, shallower and simpler of the two, and the only one with free next-day delivery as standard.
The construction is a layer of up to 1,900 mini pocket springs (25 mm tall, king size) sitting near the surface over a foam layer with graphite added, a core foam and a zoned foam base, 25 cm deep. The mini springs give a responsive feel that sleepers who dislike sinking into foam prefer, and it carries a 200-night trial, a 10-year guarantee and Good Housekeeping Approved status for 2026.
The trade-off is that a single layer of 25 mm springs is a comfort layer, not a support core, so the support underneath still comes from foam, and the medium-firm feel can be too firm for lighter side sleepers.
Who should buy the Simba Hybrid Pro?
Buy the Hybrid Pro if you like the Simba feel but want a deeper, more cushioned mattress with a natural top layer. At 28 cm it is 3 cm taller than the Hybrid and has eight layers rather than five, including a wool top layer for moisture management and more layers of mini springs.
Simba quotes up to 4,800 mini pocket springs in a king size, more than double the Hybrid, and the extra spring layers give a more progressive, less abrupt feel as you settle in. It carries the same 200-night trial and 10-year guarantee, and the product page shows a Product of the Year 2026 badge.
The trade-off is that the extra springs are still mini springs sitting in foam, so the support core is the same foam base as the Hybrid, and the wool top adds warmth for some sleepers. Simba does not publish individual layer depths for either model.
How the Hybrid, Hybrid Pro and REM-Fit compare on what matters
Springs and support
Both Simbas use mini pocket springs as comfort layers over a foam base; the Pro has more layers of them. REM-Fit's 5000 Lux Elite is built on 5000 tall premium pocket springs in two layers running the full depth of the mattress, each moving independently under the part of the body above it, so the support comes from springs rather than foam.
Comfort layer
The Hybrid uses foam with graphite added; the Pro adds a wool top layer and more foam. REM-Fit uses deep open-cell memory foam, the deepest layer in its range on the 5000 Lux Elite.
Feel
All three are medium-firm. The Hybrid is the bounciest and shallowest, the Pro is deeper and more cushioned, and the 5000 Lux Elite sits at 7.5 out of 10, multi-zoned so the shoulders sink a little further than the hips.
Cooling
Simba adds graphite to standard foam on both models, and the Pro adds wool to manage moisture. REM-Fit changes the foam itself: its open-cell memory foam has an open structure that lets air move through the layer, so body heat is carried away rather than held against you, and the tall spring core beneath is mostly air, so the whole mattress breathes. Good Housekeeping's reviewers singled out the 5000 Lux Elite's cooling.
Trial and guarantee
Both Simbas give 200 nights and 10 years. REM-Fit gives 100 nights (200 when a protector is bought with the mattress) and 15 years.
Awards
Simba Hybrid is Good Housekeeping Approved 2026 and the Pro shows a Product of the Year 2026 badge. REM-Fit's 5000 Lux Elite is Good Housekeeping Approved 2026 and the Pocket 1000 is a Good Housekeeping Winner 2026.
Where REM-Fit fits
The REM-Fit 5000 Lux Elite is the like-for-like against the Hybrid Pro: a premium medium-firm hybrid with the highest spring count in its range. The difference is what the springs are. The 5000 Lux Elite is built on 5000 tall premium pocket springs in two layers that run the full depth of the 25 cm mattress and respond individually, with a deep open-cell memory foam comfort layer on top and encapsulated edges, so the support comes from springs rather than a foam base with mini springs above it.
The open-cell memory foam is the part that answers the biggest complaint about memory foam. Traditional memory foam has a closed cell structure that traps body heat; REM-Fit's foam is made with open cells that let air pass through the layer, so heat and moisture move away from you through the night while the foam still cushions the hips and shoulders. It sits at 7.5 out of 10 on REM-Fit's firmness scale and is Good Housekeeping Approved for 2026.
If the entry-level Hybrid is the one you are weighing, the Pocket 1000 (medium-firm, 7 out of 10, 1000 tall pocket springs, Good Housekeeping Winner 2026) is the closer match among the REM-Fit hybrid mattresses, and the 3000 Supreme (medium, 6 out of 10) suits side sleepers who find Simba too firm. Every REM-Fit mattress uses the same tall pocket spring and open-cell foam construction, and comes with a 15-year guarantee and free UK delivery in 2 to 5 days.
REM-Fit 5000 Lux Elite Hybrid Mattress
Medium-firm feel, 5000 tall premium pocket springs, deep breathable open-cell memory foam and a 15-year guarantee.
Shop the 5000 Lux Elite✓ 100-night trial (200 with a protector)✓ 15-year guarantee✓ Free UK delivery✓ 0% finance
Simba Hybrid vs Hybrid Pro vs REM-Fit: which is better value?
Value here is what you get for the years you own the mattress, not the ticket price on the day. Between the two Simbas, the Pro buys 3 cm of depth, a wool top and more layers of mini springs for the same 200-night trial and 10-year guarantee; whether that is worth it depends on whether you want a deeper, softer-topped bed.
Against REM-Fit, the differences are the guarantee and the construction. Both Simbas cover you for 10 years; REM-Fit covers the mattress for 15, and its trial is 100 nights or 200 with the protector most people buy anyway. REM-Fit also publishes the spring count and comfort-layer depth for every size and is the only one of the three whose springs run the full depth of the mattress.
All three sell direct, deliver free and collect free if you return within the trial, so the remaining difference is feel, and that is what the trial is for.
100-Night Trial
200 nights when you add a mattress protector. Free collection if it is not right.
Free UK Delivery
Delivered in 2 to 5 days. Old mattress removal available at checkout.
15-Year Guarantee
Five years longer than either Simba.
Simba Hybrid vs Hybrid Pro FAQs
Last updated: August 2026
What is the difference between the Simba Hybrid and the Hybrid Pro?
Depth and layers. The Hybrid is 25 cm with five layers and up to 1,900 mini pocket springs; the Pro is 28 cm with eight layers, up to 4,800 mini pocket springs in a king size and a wool top layer. Both are medium-firm with a 200-night trial and a 10-year guarantee.
Is the Simba Hybrid Pro worth it over the Hybrid?
It is if you want a deeper, more cushioned mattress and the moisture management of a wool top. If you like Simba's bouncier entry-level feel and want next-day delivery, the Hybrid gives you most of the experience at a lower spec.
Is the Simba Hybrid Pro firmer than the Hybrid?
Simba describes both as medium-firm. The Pro's extra foam and wool layers make it feel more cushioned on the surface, while the Hybrid feels bouncier and a little firmer to most sleepers because you sit closer to the mini springs.
How many springs does the Simba Hybrid Pro have?
Simba quotes up to 4,800 mini pocket springs in a king size, across more layers than the Hybrid's single layer of up to 1,900. They are 25 mm mini springs that sit in foam rather than full-height pocket springs; the REM-Fit 5000 Lux Elite has 5000 tall pocket springs running the full depth of the mattress.
Do the Simba Hybrid and Hybrid Pro do a sleep trial?
Yes, both come with a 200-night trial with free collection if you return the mattress, and a 10-year guarantee. REM-Fit offers 100 nights as standard, extended to 200 when a mattress protector is bought with the mattress, and a 15-year guarantee.
Is a Simba mattress good for hot sleepers?
Both Simbas add graphite to standard foam to draw some heat away, and the Pro's wool helps with moisture. Open-cell memory foam, as used on every REM-Fit hybrid, lets air pass through the foam itself, which is why Good Housekeeping singled out the 5000 Lux Elite's cooling.
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