The Simba Hybrid and the Otty Hybrid are two of the UK's most searched-for hybrid mattresses, and here's how to pick between them.
On paper these two look like close relatives. Both are 25cm deep hybrids, both are rated medium-firm, and both pair pocket springs with cooling-minded foam layers. The Simba Hybrid uses up to 1,900 conical Aerocoil microsprings with graphite-infused Simbatex foam, while the Otty Hybrid takes a different route: up to 2,000 tall 16cm encapsulated pocket springs beneath heat-regulating memory foam.
There's no single winner here, and we won't pretend otherwise. The right answer depends on what you value most. The Otty comes in meaningfully cheaper for a comparable build, sitting slightly below the typical hybrid price, where the Simba sits well above it. What the Simba offers in return is a longer manufacturer trial at 200 nights against Otty's 100, plus a nine-zoned base aimed at hips and shoulders.
Below, we've broken down who each one suits, so you can match the mattress to your sleep rather than the marketing.
Our verdict at a glance: which mattress wins?
It depends: the Otty wins clearly on value, the Simba answers with double the trial length, so your budget and your appetite for a long test period decide it.
WINNER
A 200 night trial gives you a full change of seasons to decide
Simba's trial runs twice as long as Otty's 100 nights, which means you can test it through both warm and cold months before committing.
Microsprings that keep a partner's movement on their side
The 1,900 conical Aerocoil springs compress individually in response to your body, limiting motion transfer, a genuine benefit for couples.
Nine support zones under hips and shoulders
The zoned CertiPUR® foam base is designed to give firmer support to wider, heavier areas, which back sleepers with achy hips should feel the benefit of.
RUNNER UP
Better value against the hybrid market
The Otty sits slightly below the typical price for a hybrid of this build, where the Simba sits around a third above it, so you get a comparable 25cm construction for noticeably less.
Tall 16cm encapsulated springs with proper edge support
The unusually deep spring layer gives more genuine bounce, and encapsulation firms up the edges so you can sit or sleep near the side without feeling you'll roll off.
One extra size option
Nine sizes against Simba's eight, including EU sizes, gives you a slightly better chance of finding an exact fit for your bed frame.
Simba Hybrid
Otty Hybrid
Firmness
Medium Firm
Medium Firm
Layers
5
6
Trial (nights)
200
100
Guarantee (years)
10
10
Price Range
£559 to £1,099
£499 to £850
Structurally these two are hard to separate, and we're not going to force a difference. The Simba spreads its work across five layers, with graphite-infused foam over 1,900 microsprings and a zoned base; the Otty uses six layers built around a single tall 16cm spring unit topped with memory foam. Both are 25cm deep. The feel differs, springier and more supported at the edge on the Otty, more cushioned and zoned on the Simba, but neither construction is objectively better.
Construction verdict: which wins on build?
Structurally these two are hard to separate, and we're not going to force a difference. The Simba spreads its work across five layers, with graphite-infused foam over 1,900 microsprings and a zoned base; the Otty uses six layers built around a single tall 16cm spring unit topped with memory foam. Both are 25cm deep. The feel differs, springier and more supported at the edge on the Otty, more cushioned and zoned on the Simba, but neither construction is objectively better.
Which mattress feels better?
<p>Both are rated medium-firm, and Otty puts a number on it: 7/10, which means noticeable support with a softer knitted surface rather than a sink-in feel. Across owner reviews of the Simba, the most common adjustment note is that it can feel firmer than expected in the first few weeks, so treat these as similar in practice.</p><p>Position matters more than the label. The Simba's firmness suits back sleepers, but reviewers at Tom's Guide found it less suited to committed front sleepers and possibly too firm for lighter-weight sleepers. The Otty's firmer, springier support works well for back and front sleepers who need spinal support, though lightweight side sleepers may find it a little too firm on the shoulders and hips. If you love a deep memory foam hug, admittedly neither is ideal, but the Otty in particular will feel too responsive for you.</p>
Other important factors to consider before buying.
Both brands back their mattresses with a 10 year guarantee, so the long-term cover is identical. Where they differ is the trial: Simba gives you 200 nights, Otty gives you 100. The table below sets out the terms side by side.
Simba Hybrid
Otty Hybrid
Trial (nights)
200
100
Guarantee (years)
10
10
Do bear in mind that as these mattresses come delivered in sealed boxes they will have a rubbery smell when first extracted. They need a good few hours in a room with the windows open before you sleep on them.
Environmental impact and sustainability
Simba Hybrid
Otty Hybrid
Certifications
CertiPUR
The Otty is the cheaper of the two like for like, and it sits slightly below the typical hybrid price where the Simba sits well above it. Live prices for both are in the tables below.
Simba Hybrid Mattress
Otty Hybrid Mattress
There is no outright winner here, and that's a genuine verdict rather than a dodge. On construction, layers, cooling and trial terms these two are too close to separate honestly. Only two dimensions resolved. Value went to the Otty, which delivers a comparable 25cm hybrid build at a price slightly below the hybrid norm, while the Simba costs around a third more than typical. Certification went to the Simba, though counting certificates is the weakest way to compare mattresses, so don't buy on that alone. In plain terms: take the Otty if you want the stronger deal, firm edges and a springier feel. Take the Simba if you want twice the trial length, zoned support for hips and shoulders, and microsprings that keep a partner's movement contained.
Decision helper
Consider your primary need: better value with firm edge support and a springier feel, versus a 200 night trial with zoned support and low motion transfer. The first points to the Otty, the second to the Simba.
WINNER
A 200 night trial gives you a full change of seasons to decide
Simba's trial runs twice as long as Otty's 100 nights, which means you can test it through both warm and cold months before committing.
Microsprings that keep a partner's movement on their side
The 1,900 conical Aerocoil springs compress individually in response to your body, limiting motion transfer, a genuine benefit for couples.
Nine support zones under hips and shoulders
The zoned CertiPUR® foam base is designed to give firmer support to wider, heavier areas, which back sleepers with achy hips should feel the benefit of.
RUNNER UP
Better value against the hybrid market
The Otty sits slightly below the typical price for a hybrid of this build, where the Simba sits around a third above it, so you get a comparable 25cm construction for noticeably less.
Tall 16cm encapsulated springs with proper edge support
The unusually deep spring layer gives more genuine bounce, and encapsulation firms up the edges so you can sit or sleep near the side without feeling you'll roll off.
One extra size option
Nine sizes against Simba's eight, including EU sizes, gives you a slightly better chance of finding an exact fit for your bed frame.
Is the Simba Hybrid or Otty Hybrid firmer?
They're very similar. Both are rated medium-firm, with Otty specifying 7/10. Across owner reviews the Simba's most common adjustment note is that it feels firmer than expected in the first few weeks, so in practice neither will feel notably softer than the other. Lightweight sleepers may find both a little firm.
Which is better for hot sleepers, Simba or Otty?
Both are designed with heat in mind and we can't separate them on cooling. The Simba uses graphite-infused, open-structure Simbatex foam to draw heat away, while the Otty pairs heat-regulating memory foam with airflow side supports. Either should run cooler than a traditional all-foam mattress.
Which is cheaper, the Simba Hybrid or the Otty Hybrid?
The Otty is the cheaper of the two size for size, and it sits slightly below the typical price for a hybrid of its construction. The Simba sits around a third above that benchmark. Simba's answer to the price gap is a 200 night trial against Otty's 100.
How long are the Simba and Otty trials and guarantees?
Simba offers a 200 night trial and Otty offers 100 nights, both run by the manufacturer. The guarantees are identical at 10 years each. If you're unsure a medium-firm hybrid suits you, Simba's longer trial gives you more time to be certain before the return window closes.
Is the Simba or Otty better for side sleepers?
The Simba edges it for most side sleepers thanks to its nine-zoned base, which gives targeted support where hips and shoulders press in. That said, lightweight side sleepers may find both a little too firm; Tom's Guide raised this about the Simba, and Otty's 7/10 rating carries the same caveat.
Author
Jo Plumridge
Author