Simba Mattress Review UK 2026: Is the Hybrid Pro Worth It?

Is a Simba mattress good? Yes — the Simba Hybrid Pro is one of the most consistently praised mattresses sold in the UK, and it is the bed we rank first on our best mattress UK guide. Expert Reviews calls it “still our favourite hybrid mattress” and gave it a Best Buy; Tom’s Guide gave it an Editor’s Choice in March 2026; Ideal Home scored it 4.5 out of 5; and Simba holds 4.3 stars from more than 62,000 Trustpilot reviews, the largest owner sample of any British mattress brand we track.

It is not perfect, and it is not the right Simba for everyone. At its October 2026 list price of £1,299 for a double it is expensive, reviewers disagree about how firm it is, and lighter side sleepers sometimes find it too firm. The cheaper Simba Hybrid (the old “Original”) is the better buy for many people, and the Luxe and Ultra rarely justify their extra cost. This review walks through the full 2026 range, what each model costs in every UK size, what is inside the Pro, what the testers measured, what owners complain about, and when to buy so you never pay the headline price.

Simba is a British bed-in-a-box brand, and its core range in late 2026 is five hybrids that share one recipe and simply add more of it as the price rises. From the bottom: the Hybrid Essential, the Hybrid (which many reviews still call the Simba Original), the Hybrid Pro, the Hybrid Luxe and the flagship Hybrid Ultra. Alongside them sit a separate Natural Hybrid range — the Source and the Apex, which Simba says are made and finished in Hampshire — a cheap 15cm Cool Foam mattress, and a bunk-bed mattress.

The ladder makes the logic plain. Every step up adds height, layers and springs: from a 20cm, four-layer Essential with 1,000 springs to a 34cm, eleven-layer Ultra with 8,750. The big jump in spring count happens between the Hybrid and the Pro, because the Pro adds a second layer of Simba’s small Aerocoil microsprings on top of the pocket-spring base. That is the structural difference you are paying for, and it is why the Pro is the model most reviewers test and most buyers choose.

A word on names, because Simba has changed them over the years. T3’s review describes a four-model range of Essential, Original, Pro and Luxe; Simba now sells the Original simply as the “Hybrid” and has added the Ultra above the Luxe. TechRadar also notes that in mid-2023 Simba redesigned several models to use more springs and 62% less foam, cutting the carbon footprint by around 25%. So any Simba review written before late 2023 describes a noticeably different, foamier mattress. Every review we cite here covers the redesigned version, apart from T3’s, which we use only for its firmness notes.

One more thing we noticed while checking prices: on 27 October 2026, Simba’s Hybrid Pro page labelled the king an “overstock price” and “clearance price”, “offered on our website only while current stocks last.” Simba hasn’t announced a replacement, and the label may simply be sales language, but if you see a newly named Pro appear in the coming months, check whether the construction has changed before relying on the reviews below.

Here is every Simba Hybrid model in the four main UK sizes, taken straight from Simba’s product pages on 27 October 2026. If you are unsure which size you need, our UK mattress sizes guide covers every size from small single to emperor, with room-size advice.

Three patterns stand out. First, the small double costs exactly the same as the double on every Simba model, so unless your room or frame demands 120cm, buy the 135cm double. Second, the jump from double to king is only £100 on the Pro and Luxe. A king gives you 15cm more width and 10cm more length for that money; for couples it is the best-value step in the whole price list. Third, the Pro sells in more sizes than the rest, including EU double (140 × 200cm) and EU queen (160 × 200cm) for continental bed frames, both listed on Simba’s site.

The Hybrid Pro also comes with an optional HeatRelease cover. It adds £149 to a double, £199 to a king and £249 to a super king. Given that every reviewer who tested the standard cover found the Pro sleeps cool, we would skip it unless you are a genuinely hot sleeper; our best mattress for hot sleepers guide explains why a sprung core matters more than a cooling fabric.

How do these prices compare with older reviews? Expert Reviews listed the Pro at £929 single, £1,279 double, £1,329 king and £1,459 super king in April 2025. Simba’s October 2026 list is £899, £1,299, £1,399 and £1,499 — the single slightly cheaper, the larger sizes £20 to £70 dearer. That is the kind of drift you should expect, and it is why we date-stamp every figure.

The Hybrid Pro is 28cm deep and, per Simba, has eight layers. Expert Reviews and TechRadar both opened theirs up, and between them the stack runs as follows. On top, a zip-off knitted cover — Simba calls the current version Stratos “cool-touch”, and Expert Reviews says it is machine-washable at up to 40°C. Beneath it sits a layer of natural British wool, which T3 describes as the feature unique to the Pro and which every tester credits for temperature control. Then comes Simbatex, Simba’s own open-cell foam, infused with graphite in the current version.

The heart of the bed is the two layers of Aerocoil microsprings — small titanium-alloy coils that TechRadar says are split into 13 support zones. A stabilising foam layer separates them from the main support system, a layer of up to 1,000 pocketed steel barrel springs Simba calls SupportCore. A zoned foam foundation finishes the stack, made from what TechRadar calls Simba ReGen, a recycled material from surplus foam. Simba’s range table puts the Pro at 5,800 springs in total; its own product page and Tom’s Guide describe roughly 4,800 Aerocoil microsprings, which plus the 1,000 pocket springs adds up to the same figure.

What does that recipe do in practice? The wool and Simbatex give a cushioned first touch. The microsprings respond locally, so your shoulder can sink without dragging your waist with it, and they push air through the bed as you move, which is part of why it sleeps cooler than an all-foam mattress. The pocket springs underneath give the bounce and the “proper” sprung feel that many British buyers want. Tom’s Guide summed it up as the support of a firm mattress “disguised beneath a plush and welcoming top layer”.

The practical downsides are weight and handling. Expert Reviews says a double weighs about 40kg, and Tom’s Guide weighed its king at around 49kg once unpacked. The Pro has side handles on the larger sizes — T3 notes four handles, though not on the single and small double — which helps, because Simba asks you to rotate it monthly for the first three months and every three to six months after that. Tom’s Guide reported only minimal off-gassing that cleared within a day, scoring it 5 out of 5, though our UK guide notes some owners notice a smell for a few days.

Simba sells the Hybrid Pro as medium-firm, and T3 reports Simba rates it 6.5 out of 10. This is where reviewers genuinely disagree, and it is worth understanding why. TechRadar’s panel put it at around 8 out of 10 and said the lightweight testers found it a bit too firm for side sleeping, while the heavier testers found it especially comfortable. Expert Reviews went the other way: people who like very firm beds may find it too soft. Ideal Home warned it may lack enough firmness for heavier and front sleepers. Tom’s Guide measured just under 5cm of sinkage with an 8kg kettlebell, which it called about average for a medium-firm mattress.

Both camps are describing the same bed. The plush wool-and-foam top means a light person feels cushioning first and then hits the firm spring layers quickly, which reads as firm. A heavier person compresses the top completely, so they feel mainly the springs — supportive, but not hard. Your weight changes how firm any mattress feels, and the Pro’s layered build exaggerates the effect. Our mattress firmness guide explains the scale in more detail.

The clinical evidence points towards the middle. The Kovacs randomised trial found medium-firm mattresses improved chronic low-back pain more than firm ones, and Radwan and colleagues’ systematic review concluded that medium-firm surfaces were best for comfort and spinal alignment. That is the zone the Pro sits in for most adults, and why we rate it highly in our best mattress for back pain guide. For the rest of the range:

• Hybrid Essential and Hybrid: Simba describes the Hybrid range as medium-firm. With one layer of microsprings or none, they feel more uniform and a touch less cushioned on top than the Pro.
• Hybrid Luxe: T3 rated it a firm 8 out of 10 and described it as a more uniform firmness than the Pro. If you liked the Pro but want more push-back, this is the step.
• Hybrid Ultra: Tom’s Guide measured 3.8cm sinkage on it against just under 5cm on the Pro — a firmer, more supportive surface.

The short version: if you weigh under about 60kg and sleep on your side, the Pro may feel firm and the standard Hybrid is worth considering. If you weigh over about 95kg or sleep on your front, the Pro is the floor, and the Luxe is worth a look.

Unlike the big American brands, Simba isn’t tested by RTINGS, so the evidence here comes from UK review outlets that sleep on the beds and, in several cases, run simple measurements. Here is where each lands on the Hybrid Pro.

• Expert Reviews (re-reviewed 2024, updated April 2025): Best Buy and “still our favourite hybrid mattress.” Its tests found the surface cooled from 30°C to about 20°C in ten minutes, and the edge sank only 5mm more than the centre under a 7.5kg load — strong edge support. Its verdict: “The Simba Hybrid Pro is no bargain, but it’s a great investment.”
• Tom’s Guide (March 2026): Editor’s Choice. Scored 5 out of 5 for pressure relief, temperature regulation, off-gassing and three-month durability, and 4 for setup, motion isolation and edge support. It names the Pro best for back and side sleepers.
• TechRadar (updated November 2023): very supportive and bouncy, best for average and heavier back and stomach sleepers. It scored edge support 3.5 out of 5 — weaker than Expert Reviews found — and flagged it as too firm for lighter side sleepers.
• T3 (updated January 2024): gave it the T3 Award for best mattress in both 2021 and 2022, praising strong movement isolation and temperature regulation.
• Ideal Home (August 2024): 4.5 out of 5, calling it “a bestseller for good reason.”
• Which? has lab-tested Simba Hybrid models, including a Hybrid Pro Breeze variant, on body support, durability and stability. The scores are members-only, so we can’t quote them.

The consensus is unusually tight for a mattress. Every outlet rates the comfort and support highly, every outlet praises the temperature control, and every outlet calls it expensive. The two genuine disagreements are firmness, covered above, and edge support, where Expert Reviews’ measurement and T3’s experience were strong while TechRadar wanted firmer edges. If you sit on the side of the bed a lot, or share a double and sleep near the edge, the Panda Hybrid Bamboo — which our UK guide credits with solid edge support — is worth comparing; see our UK rankings.

Simba’s owner data is the biggest of any UK mattress brand, and that is useful in itself: with tens of thousands of ratings, a few angry reviews can’t move the average much.

On Trustpilot UK, Simba scores 4.3 from 62,380 reviews. Seventy-eight per cent are five-star and only 7% one-star — a much healthier spread than Emma’s 3.3 or Nectar UK’s 3.5. Simba also replies to 95% of negative reviews, which suggests a customer-service team that engages rather than ignores problems. The positive themes are comfort and support, fast delivery, easy online ordering and a smooth returns process. One reviewer summed it up as “Outstanding service from start to finish and an outstanding product.”

The negative themes are the ones to weigh. Trustpilot’s summary lists mattresses sagging or developing dips over time, back or hip discomfort, products seen as overpriced for their quality, and occasional delivery delays. One unhappy owner wrote: “I would not buy again, would stick with good old fashioned sprung mattress that used to last years.” Remember too that Trustpilot is brand-level, so the 4.3 covers pillows, duvets and beds as well as mattresses.

On Simba’s own site, the Hybrid Pro shows 4.8 from 38,239 reviews. That is product-specific and enormous, but it is collected and displayed by the seller, so we give it less weight than Trustpilot. Tom’s Guide noted the same pattern: owners praising comfort, support, motion isolation and temperature, with many reporting fewer aches.

Simba Hybrid Essential (£699 double). The entry model is 20cm deep with four layers and 1,000 springs, and it is only sold up to king size. It is a thinner, simpler bed, and at £699 for a double it competes head-on with Emma’s Hybrid Original and OTTY’s Original Hybrid, both of which offer more depth for similar money on sale. We would buy it for a guest room, a teenager’s bed or a rental, not as a main bed for two adults.

Simba Hybrid, the “Original” (£899 double). 25cm, five layers, 2,200 springs, a single layer of Aerocoil microsprings over the base. TechRadar argues this model arguably offers slightly better value for money than the Pro, and we agree for lighter sleepers and anyone on a budget. Tom’s Guide recommends it as the value alternative to the Pro. You lose the wool layer and the second microspring layer, so it is less cushioned on top and probably not quite as cool, but it keeps the same open-cell foam and the same trial and guarantee.

Simba Hybrid Pro (£1,299 double). The bestseller and the one with by far the most independent testing. Two microspring layers, a wool layer and 28cm of height make it the most balanced Simba: plush enough on top for side sleepers of average weight, supportive enough for back sleepers and heavier bodies. This is the Simba we recommend to most people, and the one that tops our UK list.

Simba Hybrid Luxe (£1,799 double). 31cm, nine layers and 6,800 springs, with T3 noting bamboo-infused wool in place of the Pro’s wool layer. T3 rated it a firm 8 out of 10 and found no overheating on either model. It is £500 more than the Pro for a double. For stomach sleepers and heavier back sleepers who find the Pro too giving, it makes sense on sale. For everyone else, it is more mattress than you need.

Simba Hybrid Ultra (£2,399 double). 34cm, eleven layers and 8,750 springs. Tom’s Guide weighed a king at 50kg and measured it firmer than the Pro. At £1,100 more than the Pro for a double, this is a luxury purchase, and we have seen too little independent testing to recommend it over the Pro. If you want a traditional premium bed, read our Hypnos review first.

Every Simba mattress, bed and topper comes with a 200-night trial. Simba’s trial page says the trial “starts when your bed or mattress arrives — even if you’ve asked for a delayed delivery”, and that if you return it “we’ll arrange a free collection and a full refund (excluding any special delivery costs).” Refunds go back to your original payment method, generally within three to five business days if you paid upfront. You don’t need to keep the packaging. We couldn’t find a minimum number of nights before you can return, unlike some brands.

The 10-year guarantee covers manufacturing faults. Simba’s product page says you must use a mattress protector to keep the guarantee valid, so buy one on day one — Simba often bundles one free with a mattress. The cheap Cool Foam mattress is the exception to the 200-night rule: Simba gives it a 100-day return window.

Delivery is free to mainland UK, and Simba advertises next-day delivery if you order by 1pm. T3 lists paid extras: a narrower time slot, weekend delivery, and removal of your old mattress for a fee. Simba also offers a recycling service for old mattresses at extra cost.

How does that compare? Simba’s 200 nights match Emma, double Panda’s and OTTY’s 100, and fall short of Nectar UK’s 365. Silentnight offers 60. For a bed that costs over £1,000, 200 nights is plenty of time to know whether it suits you; give it at least three or four weeks before deciding, because your body needs time to adjust.

We don’t publish discount codes, and you should be wary of sites that promise “exclusive” Simba codes. What we can show you is how Simba prices work, so you can tell a good deal from a normal one.

The chart shows the problem with “full price” at Simba. In November 2023, TechRadar recorded a £1,609 RRP for a double Pro with the Stratos cover — but said it usually sold for about £965, roughly 40% off. T3 listed £1,599 in January 2024, saying discounts of around 40% run throughout the year. By April 2025 Expert Reviews was quoting £1,279, and also recorded a king Easter deal of £999.20 down from £1,250. In October 2026 the list price is £1,299. In other words, Simba has periodically reset its list prices, and the headline percentage off means little on its own.

The patterns that do hold:

• Black Friday and Cyber Monday bring the deepest cuts. TechRadar saw around 45% off in Black Friday sales; Tom’s Guide says discounts of up to 25% land at peak times on current list prices.
• Bank holidays, Easter and the January sales bring shorter, smaller events — Expert Reviews’ Easter deal was 20% off the king.
• Eligible-group discounts run year-round. Simba advertises up to 26% off for key workers, students, young people, education staff, carers and charity workers; on 27 October 2026 the Pro king showed a £1,035.26 price for eligible buyers, versus £1,399 list.
• Bundles are common. Tom’s Guide found the Pro sold with a free pillow, duvet and mattress protector rather than a cash discount.

Our rule of thumb: pay no more than about £1,000 for a Hybrid Pro double or £1,050 for a king, which is roughly where the eligible-group and seasonal prices land. If it is above that, wait for the next event — they are rarely more than a few weeks apart. Our best time to buy a mattress guide covers the full UK sale calendar.

Simba mattresses are sold through Amazon UK and other retailers as well as direct. T3’s price widget showed the Hybrid Pro double at £899 at Barker & Stonehouse alongside Amazon listings, so it is worth checking third-party prices during big sales events.

Two cautions. First, Simba’s trial page only describes returns for purchases from Simba; T3 notes that if you bought elsewhere you request a return from the store you ordered from, so the experience depends on that retailer’s process. Second, make sure the listing is the current model: older stock with a non-removable cover or the pre-2023 foam-heavy build still circulates. Check the depth (28cm for the Pro), the layer count and the seller before you buy. If the price difference is small, buying direct is the safer route.

Simba and Emma are the two bed-in-a-box brands most British shoppers shortlist, and their mid-range hybrids make the cleanest comparison. Our full Emma mattress review covers its range in detail; here is the head-to-head.

Choose the Simba Hybrid Pro if you want the better mattress and the better-rated company. It is deeper, has two spring systems plus a wool layer, sleeps cooler according to every tester we cite, and Simba’s 4.3 Trustpilot score is a full point ahead of Emma’s 3.3, whose complaints focus on delivery and service. It also suits heavier sleepers and back sleepers better.

Choose the Emma Hybrid Original if price comes first or you are a lighter side sleeper. At around £699 for a double before Emma’s frequent deep discounts, it is roughly half the Pro’s list price, its medium feel is softer, and it has the same 200-night trial and 10-year guarantee. Expert Reviews and TechRadar both flag that it can sleep warm.

The fairest like-for-like is actually the Simba Hybrid at £899 against the Emma at around £699: two mid-range hybrids with one spring system each. There, the Simba’s extra depth and owner rating make it our pick if the gap is under £150 at the time you buy. For more UK alternatives, the Silentnight review covers the cheapest well-reviewed option, and OTTY’s Original Hybrid is our best-value hybrid on the UK list.

The matrix turns everything above into a quick decision. Green means it is the Simba we would pick for you, yellow means it works, pink means look elsewhere in the range.

The pattern is simple. Most couples and back sleepers should buy the Hybrid Pro — it is the best-tested, best-balanced Simba and isolates motion well, which is why it also features in our best mattress for couples guide. Lighter side sleepers should drop to the standard Hybrid, which is softer-feeling for small frames and £400 cheaper for a double. Stomach sleepers and heavier back sleepers who find the Pro too giving should step up to the Luxe. And guest rooms and tight budgets are the Essential’s job.

Simba makes very good mattresses with clear limits. We would steer you elsewhere if:

• You are a light side sleeper who loves a plush, sink-in feel. TechRadar’s lighter testers found the Pro too firm. Emma’s softer medium feel, or a topper, may suit you better; see our best mattress for side sleepers.
• You sit on the edge of the bed a lot and need it rock-solid. Expert Reviews found strong edges, but TechRadar scored them 3.5 out of 5 and Tom’s Guide found the corners less stable. Panda’s firmer hybrid has a better edge record.
• Your budget is under £800 for a double. Only the Essential fits at list price, and better-value hybrids exist at that money, including OTTY’s Original Hybrid on sale.
• You need to move the mattress often. At around 40kg for a double and 49kg for a king, the Pro is a two-person job.
• You want a mattress that will last fifteen years. Trustpilot’s negative themes include dipping over time, and no rolled hybrid at this price comes with that kind of track record.

Everyone else — especially couples, back sleepers and hot sleepers who want a proper sprung feel without a showroom price — should put the Simba Hybrid Pro at the top of their shortlist, bought in a sale. To see it ranked against Panda, OTTY, Emma, Nectar, Silentnight and Hypnos, head back to our best mattress UK rankings.