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Simba Pillow Review – Our detailed Overview for 2023

TSA reviewer Connie Hack

Written By Connie Hack

Sleep Advisor

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How We Test

Our testing process

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Presented By

Bo – Our presenters

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10 November 2023 4 min read

Simba produces some of the best products on the UK market to promote excellent sleep. Although their product range is small, each Simba pillow or Simba mattress is expertly tailored to provide you with the best possible night's sleep. This Simba Hybrid pillow review looks at its outstanding features and determines whether it is one of the best pillows on the market today.


An icon depicting a thermometer illustrating a good thermo regulating properties
Good thermo regulation
Stratos technology ensures high level of breathability.
An icon representing an eco-friendly & sustainable concept
Pro Planet & TCPP-Free + Carbon Neutral Delivery.
An icon depicting air passing through a fabric
Nanocubes & mesh border ensure high level of air flow.


An icon depicting no trial or warranty
No trial period.
An icon depicting no warranty
You only get 1 year warranty protection.
An icon depicting a washing machine, illustrating a product that is not suitable for machine washing
Not washable
Neither pillow or Nanocubes are washable.

Who is the Simba pillow for?

Simba Hybrid pillow is a true all-rounder, designed to suit everyone with its ability to support any type of sleeper through the adjustable loft, optimal thermal comfort and maximum airflow.

What do we use this product for?

We used Simba pillows to achieve a good night's sleep by elevating our head or neck height to a comfortable level, reducing the amount of stress on our neck and spine.

Simba Pillow features

Which features of the Simba Hybrid pillow set it apart from a feather pillow and other pillows available on the market that we have tested? Let's take a look.

Simba pillow close up
Stratos Active Temperature Regulation

Simba's unique selling point has always been using astronaut-inspired technologies to improve temperature regulation and offer a great night's sleep.

They have developed their own phase change materials (PCM) from Outlast technology, initially designed for NASA, to absorb, store and release heat for optimal comfort. This phase change technology is called Stratos.

The Simba pillow uses Stratos technology to absorb and move the heat away from your body to cool you down. However, the technology uses this excess heat during colder nights to keep you warm as it slowly releases heat as you sleep.

The two halves of the Simba pillow are different, with one side containing the Stratos technology, identifiable by a simple blue stripe.

Breathable & cool fibres

Underneath the temperature-regulated top cover is a layer of breathable, cool fibres which provide extra cooling. Mineral-enriched fibres aid temperature regulation, while hypoallergenic materials help those suffering from allergens.

Lightweight & breathable Nanocubes

The lightweight and breathable Nanocube technology set the Simba Hybrid pillow apart from other pillows. Nanocubes are not made of polyurethane, which is the primary material used in all-foam pillows, but of open-cell foam. Simba calls these bits of foam Nanocubes, and they make up the core of the pillow.

The Visco-elastic open-cell foam has several tiny air-filled cells that help contour your head as you sleep, allowing you to find the optimal sleeping position.

In addition, they also provide a greater level of bounce, meaning the pillow quickly reverts back to its natural shape when not in use. As a result, they upgrade the feeling of sleeping on a feather or down pillow.

This structure makes the Nanocubes highly breathable as they do not obstruct air flow like a single layer of memory foam does. In addition, you can add or remove Nanocubes to adjust the pillow's loft to find your optimal sleep height and firmness.

Mesh Border for increased air flow

Simba has added a thick ventilation strip around the middle of the pillow to further aid airflow. This works alongside the Stratos layer, cool fibres, breathable cotton and Nanocubes to ensure hot air isn't trapped inside the pillow unnecessarily. It releases hot air to cool your head during the summer and warm it during the winter, providing a perfect night's sleep all year round

Hypoallergenic microfibre fill

Meanwhile, a durable, hypoallergenic microfibre fill is located between the Nanocubes and the bottom of the pillow. This microfibre fill provides additional comfort, even softer than the mineral-enriched fibres beneath the Stratos layer.

Breathable bottom cotton cover

The bottom half of the pillow is made from Better Cotton Initiative (BCI) sourced cotton producers. As well as the usual characteristics you'd associate with soft cotton, such as breathability, durability and hypoallergenic properties, BCI-sourced cotton is environmentally and vegan-friendly as no animal products are used in the manufacture or farming of the materials.

The BCI also promotes environmentally sustainable cotton farming methods and better working practices for cotton farmers.

TCPP-free & Certipur

Open-cell foam in Simba pillow is CertiPUR certified, guaranteeing that no heavy metals or dyes were used during production. CertiPUR is one of the most respected certificates in the sleep industry.

In addition, the pillow Simba has created is free of TCPP, phosphate, parabens and other environmentally unfriendly pollutants. This means that the Simba hybrid pillow meets all British fire safety standards, providing you with peace of mind.

Our reviewer sitting on the bed and showing off Simba's nanocubes

Review of Simba pillow

our presenter Bo sitting with Simba Hybrid pillow

We've looked at the outstanding features of the Simba Hybrid pillow; but what's it like to sleep on?

The pillow has two sides, one of which incorporates the temperature regulating Stratos technology, defined by the blue stripe. This layer has the phase change technology applied and will cool you as you sleep. The bottom layer marked with the grey stripe is the BCI-sourced cotton cover that is durable and provides a soft surface to sleep on.

The middle layer comprises the Nanocubes, providing the pillow with outstanding comfort. These Nanocubes can be added and removed to adjust the loft and make it the perfect height to support any sleeping position.

This adds to a super-comfortable pillow with excellent breathability without the disturbed airflow of a regular foam pillow.

In addition, the Simba Hybrid pillow comes with a 1-year manufacturer's warranty, which could be better.


  • Size: 70×45 cm
  • Weight: 450-640 g
  • Cover: Cotton
  • Core: Open-cell memory foam cubes
  • Loft: Adjustable
  • Removable cover: Yes
  • Hypoallergenic: Yes
  • Warranty: 1 Year
  • Delivery: Free, carbon neutral delivery

What we like about the Simba pillow

What we don't like about the Simba pillow

The common problems with Simba Pillow & how to solve them

Apart from the price and underwhelming trial and warranty, this product doesn't have any performance issues we'd like to address or could help you solve. Feel free to expect sleep that'll rock your world.

Check the best alternatives to Simba pillow

If Simba Hybrid pillow doesn't tick all the boxes for you, here are two other foam-based pillows to consider.

Nectar Premium Pillow

a product image of nectar premium pillow

Nectar is a well-known brand that has been part of the UK market for years. The Tencel cooling fabric and Nectar Premier pillow cover will keep you cool throughout the year.

Meanwhile, height and firmness provide good support and pressure relief. Nectar pillows come in pairs, making them an excellent choice for couples.

If you would like to learn more, read our in-depth Nectar Prenium pillow review.


An icon depicting a firm & supportive surface indicating support & firmness
Pressure relieving
Great pressure relieving properties.
An icon depicting air passing through a fabric
Optimal airflow ensures you never get too hot.
An icon depicting a back sleeper
Good for back sleepers
Back sleepers are going to adore it.


An icon depicting a stomach sleeper, illustrating product is not stomach sleeper friendly
Not for stomach sleepers
Some stomach sleepers might find it too firm.

Silentnight Geltex Pillow

Product image of Silentnight Geltex Pillow

Geltex is a cooling and more responsive alternative to memory foam. It is a medium-firm pillow, around seven on a scale of 1 to 10 for firmness, so it works well for side and back sleeping.

Some stomach sleepers may find it comfortable, but it is unlikely to satisfy everyone who sleeps on their front.

Silentnight Geltex pillow is hypoallergenic, making it an excellent choice for allergy sufferers who want an escape from dust mites and other allergens.


An icon depicting good cooling properties
Geltex ensures a cooling effect.
An icon depicting a leaf indicating hypoallergenic properties
Safe for people with allergies.
An icon depicting a back sleeper
Good for back sleepers
Back sleepers are going to adore it.


An icon depicting a stomach sleeper, illustrating product is not stomach sleeper friendly
Not for stomach sleepers
Not an ideal pick for stomach sleepers.

Consider Emma Hug Weighted Blanket if you are buying Simba Pillow

a product image of Emma Hug Weighted Blanket

You can further enhance the feeling of relief after a long and stressful sleep by purchasing the Emma Hug weighted blanket.

As well as providing outstanding comfort, studies have shown that weighted blankets can significantly positively impact people suffering from anxiety, depression and other mental health conditions. Emma Hug blanket weighs 7 kg.

Do check our thorough review of Emma Hug weighted blanket.


An icon depicting trial or warranty
200 nights trial
You get 200 nights to test it out.
An icon depicting modern design
Modern design
Very modern look.
An icon depicting a magnifier indicating high quality
High quality
High quality design and high quality materials.


An icon representing a non-removable cover
Non-removable cover
There might be some overheating.

What makes Simba Pillow better than other pillows?

Several features of the Simba pillow make it better than other options on the market.

The temperature control technology and breathability are the best on the market and fully use Simba's market-leading technology.

In addition, the top-level foam is excellent, so the pillow retains its shape, comfort and overall quality over long periods.

Other excellent features are the two sides of the pillow, the adjustable loft, and being 100% hypoallergenic, sustainable and eco-friendly.

The sleep experience makes you feel like you are sleeping on a combination of down and memory foam, even though the vegan-friendly pillow doesn't contain any bird down.

Although Simba Hybrid pillow is expensive, it is well worth searching for Simba Hybrid pillow deals for the additional levels of comfort you'll receive.

How did we test the product?

an image of simba pillow testing

Although our testing procedures are simple, they are very effective. We take into account consumer reviews and experiences, product materials, and, of course, how the item performs. How do we assess performance? Here's how:

  • Visual inspection
  • Hands-on inspection
  • Measured tests

Here's an example of how we'd test the breathability of a pillow:

Is Simba Hybrid pillow eco-friendly or sustainable?

We're pleased to say that the Simba Hybrid is as eco-friendly as it gets.

Not only can the entire product be recycled and repurposed, but you also have to consider the following:

Overall impressions of the product after the testing

What could we say but job well done! This was one of the most comforting pillow experiences we have ever had.

The Simba Hybrid pillow genuinely is better than most other pillows on the market, as it offers unrivalled levels of comfort, support, longevity and temperature control.

Overall grade – 10 out of 10.

FAQs about your Simba pillow

Is a Simba Hybrid pillow suitable for side sleepers? 

Yes, the Simba Hybrid pillow provides excellent support and comfort for the head and neck. The adjustable loft helps it adapt to your preferred sleeping style.

Should I use a Simba Hybrid pillow if I am a back sleeper? 

Yes, this pillow is an excellent option for back sleepers. As with side sleepers, it is possible to adjust the loft to find your optimal comfort level.

Do I get a pillowcase for my Simba Hybrid pillow?

The Simba Hybrid pillow doesn't come with a pillowcase. If you use pillowcases to protect your pillows, you will need to purchase them separately.

How do I wash my Simba Hybrid pillow?

The Simba Hybrid pillow is machine washable. Remove the outer cover and wash at 40 degrees C.

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