OTTY Original Hybrid vs Simba Hybrid Essential: which mattress should you buy?

Buying a mattress online always feels like a bit of a gamble. You can read the specs, study the cutaway diagrams and tell yourself that “medium-firm” sounds sensible enough, but none of that tells you whether you’ll wake up rested or feeling as though you’ve spent the night on a camping mat.

That’s why OTTY and Simba often end up on the same shortlist. Both sell boxed hybrid mattresses that combine foam and springs. Both talk about support, breathability and comfort. Both are aimed at people who want something more substantial than a basic foam mattress, without paying luxury mattress prices.

For this comparison, I’ve looked at two Mumsnet first-hand reviews: Katy’s month-long test of the OTTY Original Hybrid and Joshua’s review of the Simba Hybrid Essential. Katy tested the OTTY in a shared bed, which gives us useful evidence on partner disturbance. Joshua tested the Simba as a solo sleeper while replacing an older, softer mattress and looking for better support.

The simple version? Choose the OTTY if you sleep hot, share a bed or want the stronger all-rounder. Choose the Simba if you want a supportive hybrid for less and don’t need the extras of a pricier mattress.

OTTY vs Simba hybrid mattress: quick verdict

The OTTY Original Hybrid is the mattress I’d choose for most couples, hot sleepers and anyone who likes a firmer bed. Katy found it supportive, breathable and good at reducing partner disturbance. It’s also cheaper for a single at the time of testing, starting from £475 compared with £549 for the Simba Hybrid Essential.

The Simba Hybrid Essential is still a strong entry-level hybrid. Joshua found it comfortable, breathable and supportive, and Simba gets more discussion among Mumsnet users generally, with plenty of praise for comfort and cooling. Some users do say the hybrid range feels too soft or doesn’t suit their back, though, so the 200-night trial is worth factoring in.

The better buy for most Mumsnet readers? I’d pick the OTTY Original Hybrid. It costs less for a single at the time of testing and feels like the more complete mattress based on our reviews. Simba still has plenty going for it, especially if you want the longer sleep trial, but it’s harder to call it the value winner when OTTY comes in cheaper at entry level.

OTTY vs Simba: at a glance

Both are medium-firm, but OTTY feels firmer

The OTTY and Simba both sit in that popular medium-firm zone, which is where hybrid mattresses usually try to keep as many people happy as possible. Thankfully, neither reviewer found their mattress too hard to sleep on. 

Katy described the OTTY’s firmness as “just right” and felt well supported during her month of testing. It’s not the sort of mattress you sink into like a marshmallow, so I wouldn’t put it top of the list for someone who wants a very soft, hotel-bed feel. But if you want a mattress that holds you up, the OTTY fits the brief.

Joshua had been sleeping on a mattress that felt too soft and uncomfortable, so the Simba had a fairly low bar to clear. Even so, it did more than that. He found the Simba Hybrid Essential comfortable and supportive, and reported feeling less stiff when getting out of bed. 

The OTTY Original Hybrid mattress in Katy’s bedroom

Threads on our Talk boards back up the main differences, though the evidence isn’t equally. OTTY is mentioned much less across 12 months*, but that user was positive and very clear on firmness: “If you like a really firm mattress, Otty. I LOVE mine.”

Simba came up much more often. Across 39 Mumsnet threads and replies mentioning Simba mattresses, we found that sentiment towards the Simba hybrid leaned positive overall, with users often praising its comfort, cooling feel and sleep trial.* It wasn’t all glowing, though. Some Mumsnet users found the Simba too soft or said it aggravated back pain.

So this isn’t really a simple “which is comfier?” question. It’s about what kind of comfort you want. 

OTTY is the one I’d choose for hot sleepers

A mattress can have all the clever layers it likes. If you’re waking up clammy at 4am, you’re not going to care about the engineering.

Both mattresses performed well for temperature regulation in testing. Joshua found the Simba more breathable than his previous mattress and said he felt less hot in bed. That’s a good result, especially for a more affordable hybrid.

“I wake up not in a sweat and generally feel a cool, consistent temperature all night.” 

- Mumsnet tester, Katy White

But the OTTY review gives us stronger cooling evidence. Katy’s previous mattress trapped heat, and she found the OTTY noticeably cooler. She woke up “not in a sweat” and said she slept at a cool, consistent temperature through the night.

OTTY is better proven for couples

This is where the OTTY pulls ahead. Katy shared the OTTY with her partner throughout testing and said she felt his movement “hardly at all”. That’s exactly what you want from a mattress if you share a bed with someone who turns over a lot, gets up earlier than you or performs a full-body flounce every time they rearrange the duvet.

The Simba Hybrid Essential was tested by Joshua alone, so we don’t have the same couple-specific evidence. He found it stable overall and noticed only slight movement transfer, but edge support wasn’t especially firm. He also felt couples might prefer a bigger size or a more premium model.

Katy’s OTTY mattress arrived neatly packaged in its box

OTTY feels more substantial, Simba keeps things simple

Both mattresses arrive rolled and boxed, and both have removable washable covers. That’s a practical win either way. Mattresses live hard lives, especially in family homes, so a washable cover isn’t a minor perk.

The OTTY Original Hybrid is deeper at around 25cm and combines pocket springs with memory foam. It feels like the more substantial mattress on paper and, from Katy’s review, in use too.

The Simba Hybrid Essential is slimmer at 20cm and uses foam with Aerocoil springs. It’s Simba’s most affordable hybrid, so it’s deliberately less fancy than the brand’s more expensive models, like the Simba Hybrid Pro. That’s not a flaw, as long as you know what you’re buying. It’s a pared-back hybrid for people who want the Simba name and a supportive feel without paying for the top end of the range.

Both are easy enough to set up and live with

Katy found the OTTY convenient to unbox and easier to move, rotate and maintain than her previous mattress. Built-in handles helped, and the removable cover made it feel more practical.

Joshua also found the Simba straightforward to set up. It expanded fully within a few hours and was reasonably easy to manoeuvre. The one downside was a slight off-gassing smell at first, although this disappeared quickly and didn’t cause irritation. Neither mattress sounds like a faff once it’s in place. 

Just be realistic about boxed mattresses: they may arrive compact, but you’ll still want another adult nearby if stairs, tight corners or a king-size mattress are involved.

Pictured: the OTTY Original Hybrid in its delivery box

OTTY is cheaper for a single but Simba gives you longer to try it

At the time of testing, the OTTY Original Hybrid started from £475 for a single, while the Simba Hybrid Essential had an RRP from £549 for a single.

That makes OTTY the stronger value pick on price, at least at entry level. It’s cheaper for a single, deeper at around 25cm and, in Katy’s review, performed particularly well on cooling, support and motion isolation.

The Simba still makes sense if the longer trial matters to you. Its 200-night trial gives you more time to decide whether it suits your body, which is useful with any mattress and especially useful if you’ve had back pain or know you’re fussy about firmness.

So the value question isn’t “cheap Simba versus pricier OTTY” anymore. It’s more nuanced than that. OTTY gives you the lower single price and the stronger all-round performance in our reviews. Simba gives you a longer trial and a supportive, breathable mattress from a brand that gets plenty of Mumsnet discussion.

OTTY vs Simba: which is better for back pain?

I’d be careful about making a sweeping back pain claim here. A mattress that helps one person’s back can make another person feel worse, as the Simba forum discussion shows rather neatly.

What we can say is that Joshua tested the Simba while already dealing with back pain and found he felt less stiff when getting out of bed. That’s a point in Simba’s favour for anyone upgrading from an old, soft or unsupportive mattress.

With the OTTY option, Katy found it supportive throughout testing and its firmer feel may suit those who prefer a more held-up sleep surface. 

If back pain is the main reason you’re shopping, pay close attention to trial periods and returns. The best mattress on paper is still the wrong mattress if your back hates it after a fortnight.

Joshua felt less stiff when getting out of bed when sleeping on the Simba mattress

Who should buy the OTTY Original Hybrid?

Buy the OTTY Original Hybrid if you share a bed, sleep hot or want the more rounded mattress of the two. 

It’s the one I’d recommend to couples first, because Katy’s review gives us clear evidence that it limits partner disturbance well.

It’s also the better fit if you prefer a supportive medium-firm mattress and don’t want a very soft, sink-in feel. If your idea of mattress heaven is something cloud-like and plush, this probably isn’t the one.

Choose OTTY if:

• You sleep hot

• You share a bed

• You want stronger motion isolation

• You prefer firmer support

• You want a deeper hybrid mattress

Avoid it if:

• You want a very soft, squishy mattress

• You’re looking for the cheapest hybrid option

Bedding atop the Simba mattress in Joshua’s bedroom

Who should buy the Simba Hybrid Essential?

Buy the Simba Hybrid Essential if you want a supportive hybrid mattress at a lower price and don’t need the most premium model in the range. 

It’s a good option for solo sleepers, combination sleepers and anyone replacing an old mattress that has started to feel too soft or unsupportive.

It’s less compelling for couples who need strong edge support or lots of space. In that case, I’d either size up or look at a more premium option.

Choose Simba if:

• You want the cheaper option

• You sleep alone

• You’re upgrading from an old, soft mattress

• You like a medium-firm feel but don’t want anything too hard

• You want a longer sleep trial

Avoid it if:

• You need very strong edge support

• You’re a couple looking for a more substantial shared-bed feel

• You already know softer hybrids don’t suit your back

Final verdict: which one would I buy?

I’d buy the OTTY Original Hybrid if I were choosing between these two. It gives us more of what matters in a shared family home: good cooling, support, a washable cover and reassuringly low motion transfer. It also starts from less for a single at the time of testing, which makes the recommendation easier.

That said, the Simba Hybrid Essential is still a good buy. It’s comfortable and supportive, and Joshua’s review suggests it can make a real difference if your current mattress has seen better days. 

Simba also has the longer trial period and the brand itself has more visible discussion among Mumsnet users, which is useful, but that discussion is more divided. Plenty of people love the comfort, while others find the hybrid range too soft or unhelpful for back pain.*

So this is an OTTY win overall. Not by a huge margin, and not for every sleeper, but enough to make it the more confident recommendation for most people comparing OTTY vs Simba.

About the author

Rebecca Roberts (aka Beccy) is our resident lifestyle expert with a practical focus on sleep, wellness and everyday comfort. She’s equally at home tackling frank, NSFW‑adjacent topics as she is road‑testing kitchen appliances, mattresses and vacuums that work for real parents. As a mum of two, she writes with the time‑poor, sleep‑deprived in mind - honest product reviews, realistic routines and products that make parents’ lives easier.

When she’s not at her desk, she’s probably product‑testing with her two helpers, corralling a PTA or walking her two dogs up and down country lanes.

Read next: 

• Best pillows

• Best mattress toppers

*mumsGPT conversational analysis, 7 July 2025 to 7 July 2026