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.
Simbatex Foam mattress composition
The Simba Foam mattress is a revolutionary all-foam mattress with four advanced layers to provide a luxurious sleep experience.
These layers include:
- Anti-allergy removable cover
- Simbatex foam comfort layer
- Simba response foam layer
- High-density foam base
All the foams used in the Simba Foam mattress are CertiPUR-certified, meaning they are free from harmful metals and phthalates and include non-toxic levels of fire retardants. 🔥
Simbatex foam comfort layer
Simbatex foam features an open-cell structure with excellent elasticity to cushion around the body more easily.
Simbatex foam allows 30 times more airflow than traditional memory foam and is infused with graphite for a cooler sleeping experience. ❄️
Simba-response foam layer
The Simba-response foam layer has a firmer feel to provide additional support.
This helps to encourage the natural alignment of the spine and neck without too much sinkage into the foams.
Unlike standard memory foam, the open-cell structure of the Simba-response foam layer is less dense, encouraging air to flow throughout the mattress. 🌬️
High-density zoned foam base
Lastly, the high-density base foam layer has support in mind.
This thick foam layer has zoned support, ensuring relief in the areas you need most, such as the shoulders and hips. 👯
This layer also provides a solid base to ensure the Simba Foam mattress lasts as long as possible.
What does sleeping on the Simbatex Foam mattress feel like?
Simba is definitely on the right track when it comes to comfort. 🙌
The Simba Sleep mattresses are some of the most comfortable we’ve ever tested.
We tested the Simba Foam mattress in each sleeping position to see if it was suitable.
The Simba Foam mattress felt comfortable and supportive in the side sleeping position.
Side sleepers require a soft to medium mattress, depending on your weight and individual requirements.
As shown in the below image, the Simbatex foam layer contoured around the shoulders and hips, reducing pressure on these areas.
This helped the spine stay neutrally aligned with the neck throughout the night. 💤
Back sleepers can also benefit from the Simbatex mattress, thanks to its medium-firm rating, which provides adequate support for the spine.
The foam layer gently cushioned the backside and shoulders, ensuring our testers received optimal support.
Overall, our testers felt well-supported in the back sleeping position. 💪
Stomach sleepers require a firm mattress that keeps the body straight and prevents the spine from hammocking.
You can see in the image below how the spine was kept reasonably straight in this position for our female tester.
The Simbatex Foam mattress provides adequate firmness for lighter-weight stomach sleepers.
However, our heavier male tester experienced back pain when sleeping in this position.
We’d recommend the Simba Foam mattress to lighter-weight sleepers, but heavier sleepers may sink too much. 👎
The Origin Hybrid mattress is an excellent firmer alternative for heavier-weight stomach sleepers.
Is the Simbatex Foam mattress good for couples?
You may not have heard of motion transfer before, but it’s actually a vital aspect to consider when purchasing a new mattress - particularly for couples. 👨❤️👨
Motion transfer in a mattress refers to how much movement is felt on one side of the mattress when someone moves or shifts their weight on the other side.
Mattresses with high motion transfer mean you’ll feel your partner’s movement, especially when they get in and out of bed. 🌊
After sleeping on the Simbatex mattress for a few nights, we concluded it had low motion transfer.
Despite going to bed and waking up at different times, our testers felt no movement throughout the night.
We also tested motion transfer with our kitty sleep tester by placing a glass of water on one side of the mattress. 🥛
Take a look at our results:
The glass of water stayed mostly still when our kitty moved around on the other side of the Simbatex mattress. 🐈
In fact, the glass only began to tip when he made sudden movements closer to the glass.
Simbatex Foam mattress sizes
The Simbatex mattress is available in standard UK sizes. 📐
Check out our size guide below:
- Simbatex Foam mattress single size: 90 x 190 cm (3’ x 6’3”)
- Simbatex Foam mattress small double size: 120 x 190 cm (4' x 6'3")
- Simbatex Foam mattress double size: 135 x 190 cm (4.4” x 6’3”)
- Simbatex Foam mattress king size: 150 x 200 cm (5’ x 6’6”)
- Simbatex Foam mattress super king: 180 x 200 cm (6’ x 6’6”)
Unlike some of the Simba Hybrid options, the Simbatex mattress isn’t currently available in EU sizes.
Simbatex Foam mattress depth
According to the Simba website, the Simba Foam mattress measures 25 cm (9.8") deep.
However, a few hours after unboxing the Simbatex mattress, we measured it at just 21 cm (8.26") deep.
We re-measured the mattress a few days later, and it was about 24.5 cm (9.6") in depth.
If your mattress looks a bit thin after you unbox it - don’t panic!
Some mattresses take more time than others to expand fully, and we urge you to give it at least 24 hours to see if your Simba Foam mattress reaches its full height. 📈
Simbatex Foam mattress discount codes
Simba Sleep mattresses are known for their quality but can come with a higher price tag. 💸
Don't let the price discourage you, as Simba Sleep offers promotions and discounts throughout the year.
Moreover, purchasing a mattress online is usually cheaper than shopping in-store, and you can find additional savings by using Simbatex mattress discount codes.
To ensure you never miss out on a great deal, we encourage you to bookmark our discounts page and sign up for our newsletter to receive the latest promotions and sales directly to your inbox.
What if you don’t like the Simbatex Foam mattress?
The Simbatex mattress includes a 200-night trial, which allows you to test the mattress without risking your money. 💰
If you don't find the mattress comfortable or supportive enough during this period, contact Simba Sleep for a hassle-free refund.
We strongly recommend taking advantage of the sleep trial, especially when purchasing a mattress online.
After all, everybody is unique, and the only way to really know if a mattress suits your needs is by sleeping on it.
It usually takes around 30 days to fully adjust to a new mattress, so we suggest sleeping on it for at least this long.
Should you buy a Simbatex Foam mattress?
The Simbatex Foam mattress is a luxurious all-foam mattress with advanced foam layers to provide superior comfort and support. ✔️
Our male and female testers found the mattress comfortable and supportive in most sleeping positions.
But we’d advise heavier weights and stomach sleepers to consider a firmer mattress instead.
Overall, the Simbatex mattress is a great choice for those looking for a high-quality foam mattress that sleeps cooler than other all-foam brands. 🌡️
If you’re interested in the Simba Hybrid but it’s slightly out of budget, then the Simbatex mattress is an excellent alternative.