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Simba Hybrid 3-in-1 Duvet Review

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Written By Connie

CPD Sleep Consultant

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How we test

Our testing process

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7 May 2024 7 min read

The Simba Hybrid 3-in-1 Duvet is a good all-year choice that is adjustable to suit your needs. There are three different variations of a duvet to help you sleep, depending on the time of year. We put it to the test and you can find out what we thought in our Simba Hybrid 3-in-1 Duvet review.

We know Simba have nailed its mattress design but how do their duvets compare? It's a versatile duvet that works as a warmer Winter duvet while also being a cooler Summer duvet. It serves every purpose to keep all sleepers happy. The Simba 3-in-1 is the most expensive Simba duvet, but that's to be expected as it's great for all months of the year rather than a temporary one, and you're essentially getting two duvets individually for the price of one.

Let's dive deeper into our opinion, testing and overall review.


An icon depicting a magnifier indicating high quality
A high-quality duvet with a soft cotton cover.
An icon depicting a washing machine, illustrating a product that is suitable for machine washing
Easy maintenance
It's a machine washable duvet to keep it fresh and clean.
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Clever design
An adjustable design to suit you all through the year.


An icon depicting a money bag indicating an expensive product
It is a fairly pricey duvet.
An icon depicting no trial or warranty
Short trial period
The trial period would be better if it was a little longer.

Who is this product for?

As we briefly mentioned, this particular Simba duvet is suitable for everyone. Whether you sleep hot or cold, have allergies, or are looking for a duvet to keep you comfortable with extra needs – this one does exactly that. It can be adjusted for what you need and tailored to work with your body temperature.

What do we use this product for?

This duvet is good for optimum temperature control so you're never too hot or cold. You can sleep in the perfect environment throughout the year without continuously feeling like you need to change your duvet or buy a new one. This one does it all.

Does the Simba Hybrid 3-in-1 Duvet come in different versions?

There are a couple of other choices of duvets that are similar to this one. However, they are designed with other customers in mind. The other two duvets are both hybrid designs like the 3-in-1 but there are some slight differences. 

Simba Hybrid Duvet

The standard Simba Hybrid Duvet uses the same materials as the 3-in-1 to give it breathability and a quality product. The difference is this duvet is an all-rounder, at 10.5 tog, so it can be used by anyone who is looking to cosy up every night. It can be used all year round by most people – unless you get hot, then you might find it too thick for the warmer nights.

Simba Summer Duvet

This duvet is a lighter summer duvet with a 4.5 tog rating. It is still soft to the touch and comfortable to snuggle up with, but it is a more lightweight design. The Simba Summer Duvet is more suited for that particular season or for those who are always getting hot during the night, even on the colder nights.

Features you should know about the Simba Hybrid 3-in-1 Duvet

Whether you choose a Simba double duvet or a king-sized duvet, the product will still have these same features. They are the things that make the duvet stand out from other brands and alternative options. We have picked out the ones we feel are most important.

Simba Renew clusters

The Simba Hybrid 3-in-1 uses their Simba Renew fibres for a super soft and durable filling. It is a sustainable alternative to a feather and down duvet. The fluffy filling is made up of recycled PET bottle fibres. The fibres are combed into airy clusters to create a soft and breathable material. This is combined with modal (from natural beech wood pulp) that helps with wicking away moisture from the body.

Stratos Heat Control Technology

The Stratos technology is designed to keep you cool. Having this side of the duvet closest to your body will allow the fabric to sense your body temperature and react efficiently by dispersing the excess heat. So, if you share with a partner and one of you is a hot sleeper, they can use the lower Tog and the colder sleeper can use the 7 Tog.

Piping design

If you think there’s a chance you will get confused between the two duvets, Simba has thought this through to make it simple. You can look at the card and it tells you how to spot the difference. For the 3.5 Tog, it has blue binding whereas the 7 Tog has grey binding. To spot the Stratos side with ease, look for the side with the cube patterning or find the Simba label – the side with the Simba logo facing up is normal and the side with ‘Stratos’ is the cooling side.

Review of the Simba Hybrid 3-in-1 Duvet

our video presenter holding Simba Hybrid 3 in 1 duvet

The Simba Hybrid 3-in-1 Duvet is very comfortable to snuggle into and I found it to be gentle on your skin. So, if you choose to use it with or without a duvet cover, you will still get a good night’s sleep. The duvet does rustle slightly which can be a little disturbing for some… by some, I mean me… it’s disturbing for me.

The lighter of the two duvets is 3.5 Tog and very thin which is great for warmer nights. What’s more, it has Stratos technology that also helps to keep you cool too. Those who are hot sleepers will have no trouble with sticky legs or an uncomfortable night’s sleep when they use this.

The 7 Tog duvet is a little thicker and is great throughout the year, depending on what type of sleeper you are. Again, it has the Stratos technology side to keep you cool.

Together the two duvets make up the same Tog as their hybrid duvet. Both duvets have poppers which are super effortless to pop together and separate. It’ll take a lot to separate them in your sleep – I would be surprised if you do – but if you have a cover over it then it’ll be extremely difficult to accidentally undo them.


  • Filling: 80% Simba Renew fibres (Polyester), 20% Modal
  • Cover: Cotton, Modal
  • Size: Single, Double, King, Super King
  • Breathability: 7/10
  • Hypoallergenic: Yes
  • Removable cover: No
  • Care instructions: Machine washable at 40°C and tumble dry on a low heat
  • Warranty: 1-year guarantee
  • Trial: 30 nights

What we like about the Hybrid 3-in-1 Duvet

There are many things to like about the Hybrid Duvet and we've narrowed it down to just a few that we think are worth noting. It's a quality duvet so there was bound to be a lot to like. Here are some of them:

What we didn’t like about the Hybrid 3-in-1 Duvet


A duvet can't be suitable for everyone, there will be some things that people will dislike about it. We've picked out a couple of things that are not so good.

  • First up is the price tag. There are many cheaper alternatives that you could choose from. This one is quite expensive compared to them which can put some people off buying it. That's not to say it isn't worth the money but it can be a deciding factor.
  • The button fastening design is clever but can become a little annoying if you choose not to use a duvet cover. There'll be gaps in between each button that will be noticeable whilst you sleep. Obviously, the easy solution for that is to use a duvet cover. Over time these buttons can loosen a bit so you might find a few of them un-pop in the night. Don't worry, it's not enough to completely un-pop them all and disturb your sleep.

Simba's customer service and company information

Delivery – When you order from Simba, you can expect the smaller products, like this duvet, to be delivered within three working days. However, for those who have purchased a mattress as well, you will receive them on the same delivery date – which is how my order arrived.

Payment – The standard payments are available on Simba. You can also pay with smaller payments with DivideBuy and SplitIt. The other option is to split into three payments with your Klarna account.

Online customer service – If there are any questions about your order or the products, you can go to the online bot and ask a question from the selection provided – otherwise, you can check out their list of FAQs or fill out the form to talk to someone via email.

Check the alternatives to the Simba Hybrid 3-in-1 Duvet

If you feel there isn't enough versatility with this duvet, we can recommend another option that might be better suited. We have tried to pick one of similar quality and within the same price range. You can take a look at both to see which one fits your sleep style.

Emma 4-Seasons Duvet

a close up of Emma 4 Season duvet

An alternative to the Simba Hybrid 3-in-1 Duvet is the Emma 4-Seasons Duvet. It has the same type of design with a button fastening to connect two duvets. One of the duvets is 3.5 tog and the other is 7 tog – creating a 10.5 tog too. A 3.5 tog duvet is super lightweight and perfect for warmer nights, 7 tog will be suitable for most of the year and the 10.5 tog is great for colder nights or all year round depending on the sleeper.

This is a good alternative to the Simba one because it is a slightly more versatile duvet with the option of an even lower tog rating.


An icon depicting lightweight properties
Very light
The duvet is incredibly light even when using both inserts.
Incredible for hot sleepers
You can rarely find a 3.5 TOG duvet, so, this is an amazing choice for a summer duvet.
an icon depicting many options
More options
You basically get 3 duvets with a single purchase.


An icon depicting a non all season product
Not quite a 4-season duvet
It's debatable whether this 10.5 TOG is warm enough for winter.
An icon depicting a money bag indicating an expensive product
While you do get 3 duvets, they're still not cheap.

Is the Hybrid 3-in-1 Duvet eco-friendly or sustainable?

When it comes to environmental solutions, Simba claims to have carbon-neutral delivery and aims to be Net Zero by 2030. But in terms of their products, the reusable bag for the duvet is made from recycled materials. On the side, it reads, “We’ve made this bag out of recycled materials. Feel free to use it as a storage bag for your out-of-season duvet.” Rather than wasting packaging that you’ll just throw in the bin, they provide you with packaging you can get continual use from. 

Always remember, reduce, reuse, recycle. Reusing something is even better than recycling which is why we love this idea.

As for the materials used, Simba has their Simba Renew fibres that we have previously mentioned. This is a sustainable choice made up of recycled PET bottle fibres. Also, the cotton cover is made of cotton from the Better Cotton Initiative.

How did we test the product? 

Every product goes through a testing process to ensure we give the best review and our honest opinions. On a broad level, every single product we receive will have the same three tests. Those tests are: 

To make things clearer, here's how we test the durability of a duvet:

Overall impressions of the product after the testing


Is it worth forking out for this duvet? If you’re a hot sleeper, it’s probably worth it… but what if you’re not?

I’m not a hot sleeper so being cool isn’t a deciding factor for me, I like to snuggle up so only the highest tog will suit me. Although, it would be nice to flip the duvet to the Stratos side to keep me cool in the Summer whilst still being able to feel cosy. However, if you’re a consistent hot sleeper, this can be a game-changer and well worth the money for you.

Some of us find it difficult to have the perfect duvet to survive every season but with the 3-in-1 duvet, you’re likely to have a solution. It might take some testing to find what works for you in varying temperatures, but it’ll be worth it in the end. Just note that it is fairly expensive compared to other duvets, although you are getting three duvets in one.

So, if you already have a quality Simba mattress or the Simba Hybrid Pillow then you may as well add this Simba duvet to the collection. The comfiest and cosiest night's sleep you will have.

FAQs about your Simba Hybrid 3-in-1 Duvet

Some information may have been missed or you may not have read it above so we have summarised a few of the key points in the questions below. If there's anything else we can answer then feel free to leave us a comment on this page.

Do you put a duvet cover on a Simba duvet?

This one is up to you. It doesn't need a cover as it's soft touch but it can be a good idea to keep it clean and for longevity. The button fastening might not be comfortable for some so you may decide to use a cover.

Can you put the Simba duvet in the washing machine?

It's made even more practical by making the duvets machine washable. Just pop it in the machine at 40ºC, followed by the tumble dryer on low heat.

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About the author

As a CPD certified Sleep Consultant I know how important sleep is. And as a combination sleeper, I have found it difficult to get products to suit my sleep style. I have more than 2 years product testing experience with The Sleep Advisors which means I have slept on, with and under more than 500 products with varying degrees of success. This is added to more than 2 years experience as a product reviewer for Closer, Heat and Grazia magazines, so I've got a rigorous process. I love sharing my sleep testimonials with our readers and hearing their experiences too.
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