How we test products
Our mission is to take the guesswork out of finding the perfect sleep products.
We've dedicated hundreds of hours to testing mattresses and sleep accessories, and rely on a team of testers of differing weights, temperature preferences, and sleeping positions to evaluate each product.
Tested products are granted the Sleep Hero tested stamp of approval, a mark of our review's reliability.
If we haven't personally tested a product, please be assured that we invest significant time and energy into scouring the UK market and researching the best recommendations, and we work with a team of sleep experts who review our articles, ensuring that the insights we provide are not only relatable but also reliable.
Simba Hybrid pillow composition
The Simba Hybrid pillow with Stratos is one of the most unique pillows on the market.
It features space-age cooling Stratos technology and removable memory foam nanocubes. 👾
We'll go into detail on what this means and how it affects your sleeping comfort further down.
The Simba pillow comprises three layers:
- Top Aerelle layer: This layer has mineral-enriched fibres that help dissipate excess heat and provide a soft feel.
- A middle layer of polyester casing with hundreds of individual Simba nanocubes: These blue cubes made of viscoelastic open-cell memory foam provide the perfect cushioning and support.
- Bottom comfort layer: This layer is soft, durable, and fully hypoallergenic.
The Simba Hybrid pillow is fully customisable.
The Simba pillow relies on hundreds of individual visco nanocubes that make up the bulk of the pillow.
In contrast, most other customisable pillows feature different layers of memory foam and foam, which can be combined as required.
What exactly are Simba nanocubes?
Simba nanocubes are small cubes of blue memory foam.
You’ll find these in a polyester casing at the heart of the Simba pillow. 💙
Each Simba pillow comes standard with hundreds of nanocubes (640 g, to be exact).
We show you what these look like in the video below:
Nanocubes play a vital role in adjusting the pillow's height and firmness.
We'll get to this in the next section. 👇
Does the Simba pillow sleep hot?
Since the Simba pillow features memory foam, it's easy to assume that it may sleep hot - as memory foam products often do.
But, the Simba Hybrid is a cooling pillow, which is largely due to the unique Simba pillow cover.
Let's look at this in a tad more detail. 👇
Simba Hybrid pillow cover
The Simba pillow case feels soft and cool to the touch.
It is divided into two separate sleeping surfaces:
- Top half with Stratos technology
- Bottom half made of breathable cotton
The Simba pillow case has been uniquely designed to keep you cool. ❄️
Simba Stratos technology
The top half of the pillow cover, marked by the blue border, contains Simba’s revolutionary Stratos technology with active temperature regulation.
Stratos is a temperature-regulating fabric that absorbs, stores, and releases heat as required.
The fabric will release heat if your body temperature drops but store heat if your body temperature is high. 🔥
This keeps the cover perfectly temperature-regulated, providing for a comfortable sleep no matter the season.
Naturally breathable cotton
The other side of the Simba pillow case, marked by the grey border, is made of naturally breathable cotton.
Simba only uses BCI-sourced cotton. 🌱
The Better Cotton Initiative is a programme that encourages higher standards of sustainability within the cotton industry, supporting cotton producers and reducing the impact the industry has on the environment.
Separating mesh border
The two halves of the pillow are divided by a distinct mesh panel.
This not only enhances the design of the pillow but also serves an active cooling function. 💨
The mesh border allows for greater air circulation within the pillow, keeping the nanocubes cooler and removing excess heat.
Simba Hybrid pillow size
The Simba pillow is available in one standard size of 75 x 50 cm (29 inches x 19 inches).
It comes with a standard loft of 20 cm (7.8 inches) and a weight of 1.78 kg (3.9 lbs). 🏋️♀️
Of course, this will change as you remove the nanocubes.
Simba pillow discount code
Simba Sleep UK regularly offers discount codes and vouchers for its mattresses.
But, Simba pillow sales are rare.
That said, the company often offers a percentage off purchases over a certain amount. 🥳
This is great if you’re looking to buy more than one pillow - or need a few items.
You could also get a percentage-off discount if you purchase your Simba pillow together with a Simba mattress.
We do our best to find discount codes for you and collect them all on our discounts page.
Once you've found a good coupon code, simply apply it upon checkout to get your discount. 🛒
If there are any Simba pillow sales currently running, we'll also display them throughout this page.
Simba Hybrid pillow NHS discount
Simba Sleep UK also offers an NHS discount for healthcare workers and Blue Light Card members.
This discount gives you 41% off any Simba Hybrid mattress, plus 41% off bedding, pillows, duvets, and sheets when you purchase these in addition to a mattress.
You will need to provide some form of identification to register.
The Simba NHS discount cannot be used with any other offer.
Simba pillow trial
You may be used to the 200-night trial period that comes standard with the Simba mattress.
Unfortunately, there is no Simba pillows trial period. 😔
But since the Simba pillow is so customisable and of such exceptional quality, you probably wouldn’t return it even if you could.
Simba pillow refund policy
While the Simba pillow doesn't come with a trial period, it does come with a standard 14-day return policy. 🗓
You can return your pillow unused and securely wrapped in the original packaging within 14 days of delivery.
If a trial period is a non-negotiable for you, consider the Emma pillow or the Panda pillow instead.
Pillows with great trial periods:
Contact Simba Sleep UK
Customer service: To contact Simba Sleep directly for complaints, support, or queries, please e-mail them at firstname.lastname@example.org or visit their live online chat. The customer services team is available Monday to Friday, from 9 am - 5 pm., and Saturdays from 9 am to 1 pm.
Registered office: Simba Sleep, The Stable Yard, 60 Petty France, Westminster, London SW1H 9EU