Simba launches new cooling mattress at Amazon ahead of another summer of gruelling heatwaves

There’s nothing like a summer heatwave to tank your sleep, but Simba is hitting back this year with the release of its new cooling bed in a box, the Simbatex Cool Mattress, exclusive to Amazon UK, with prices from £349.

The 23cm tall Simba Simbatex Cool Mattress is made from four layers of foam, including graphite-infused Simbatex cooling foam that latches onto excess heat then kicks it right out of the mattress to keep you at the right temperature for sleeping.

A comfy new cooling bed could be your secret weapon for better sleep this summer, especially as the Met Office is predicting another summer of gruelling heatwaves. Here’s what you need to know about the Amazon-exclusive Simba Simbatex Cool Mattress, and who might benefit from sleeping on it…

Simba Simbatex Cool Mattress: from £349 at Amazon
This four-layer bed-in-a-box is designed with graphite-infused foam to get rid of excess heat to help regulate your body temperature while sleeping, so that you sleep more comfortably through the night. It comes in five sizes, and a double is priced £399, while a king costs £429.

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Cooler nights, better days

Overheating in bed is a major disruptor of sleep, and something I’ve had a lot of trouble with over the years. The best mattresses I’ve tested regulate temperature through the night, so you sleep neither hot nor cold, and your bed feels ‘just right’ to the touch.

The Simba Simbatex Cool Mattress contains graphite-infused foam that draws excess heat away, stopping it from pooling in the mattress beneath you.

I’ve slept on graphite-infused mattresses before and on the whole found them largely comfortable from a temperature point of view.

I’ve also slept on several Simba mattresses, including the Natural Hybrid Apex (the mattress I share with my co-sleeping toddler) and have never overheated on it, even when I’m approaching my period.

But the Simba Natural Hybrid Apex is nearly five times the price of the Simbatex Cool Mattress, so I’m intrigued to see what this newcomer can bring to the table in terms of cooling performance for a much lower price.

About the Simba Simbatex Cool Mattress

Simba’s new cooling mattress in a box comes in one feel – medium-firm. In my experience, that level of firmness, which usually comes in at around 6 out of 10 on the mattress firmness scale, suits the majority of body types and sleeping positions.

I’ve spent the best part of five years sleeping on different Simba mattresses and find that they generally deliver a good mix of support and comfort.

The addition of a seven-zoned foam support base is also appealing, as medium-firm memory foam mattresses can sometimes bottom out beneath heavier bodies.

So on paper, it looks like the Simbatex Cool Mattress could do a good job of keeping your spine in healthy alignment (no dipping or arching) if you’re plus-sized too. We’ll be calling one in to test soon to see how it compares to similar beds we've reviewed.

Speaking of tests, if this bed-in-a-box takes your fancy, Simba is offering it with a 200 night sleep trial, so you’ll have ample time at home to make sure it suits your needs.

Is it the right mattress for you?

Good cooling mattresses normally cost a lot more than the Simbatex Cool Mattress, and on the whole they have more heavy-duty cooling technologies such as Phase Change Material, and Celliant.

Mattresses that take a more natural approach to cooling are usually made with breathable organic latex, wool and organic cotton, and these are sweat-wicking too for drier sleep.

The Simba Simbatex Cool Mattress doesn’t contain these materials, but it does contain graphite-infused foam to help regulate heat. This is promising, and a step beyond what I’d expect from boxed beds in this price category.

The 200-night mattress trial from Simba also means you’ll have plenty of time to make sure the Simbatex Cool does what it promises, as even if you buy it now you’ll still be within the trial timeframe come summer.

Overall, I’d consider buying it if you struggle with overheating while sleeping, and want a medium-firm mattress at a fair price to help regulate your temperature better so you have less wake-ups during the night.

However if you’re dealing with chronic night sweats and hot flashes, you might need a more heavy duty solution such as the Eight Sleep Smart Cooling Mattress Cover (from £2,249 at Eight Sleep) with independent cooling for each side of the bed.

How to unbox the Simbatex Cool Mattress

I’ve been unboxing mattresses for years, so I have some top tips to share here. First, carry the boxed Simbatex Cool Mattress up to your bedroom – careful, as these vacuum-packed beds can be heavy to cart around.

Place the box on the floor next to your bedframe, then lift the rolled and vacuum-packed Simba mattress out of the box. You might need a buddy to help you, depending on the size of mattress you need.

Place it on the bed, then begin carefully cutting through the protective plastic it comes wrapped in.

Sometimes compressed mattresses can spring open when the plastic is taken off, which is quite the surprise (and funny for the person watching).

Once the mattress is unwrapped, let it fully inflate before you sleep on it, otherwise you may damage the foams and compromise the support and comfort of the mattress. Simba recommends leaving the Simbatex Cool Mattress to inflate for 48-72 hours before you sleep on it.

In terms of how to care for your new mattress, I recommend rotating it every three months to ensure wear and tear is spread evenly to prevent premature sagging. The mattress cover is also removable for machine washing, so you can freshen it up a few times a year to keep pesky dust mites under control.