Simbatex® Foam Explained: What Makes Simba's Memory Foam Different?
Memory foam is popular for its ability to cushion the body and respond to pressure, but traditional versions can sometimes feel warm or slow to recover when you change position. For sleepers who enjoy the comfort of foam without feeling excessively enclosed by their mattress, the material's construction makes an important difference.
At Simba, we've developed Simbatex® foam to provide responsive cushioning while encouraging airflow and helping warmth move away from the body. It's a key part of our Hybrid® mattress technology, working alongside springs and supportive layers to create a balanced sleeping experience.
What Is Simbatex® Foam?
Simbatex® is Simba's proprietary, graphite-infused foam, engineered to provide cushioning with a cooler, more responsive feel. Unlike conventional memory foam, it has an open structure that allows air to move more freely through the material.
It's used within our Hybrid® mattresses, where it works alongside Aerocoil® microsprings and other comfort layers. Together, these materials are designed to balance cushioning, responsiveness and support without relying on a single type of foam.
How Is Simbatex® Different from Traditional Memory Foam?
Traditional memory foam is a viscoelastic material that responds to pressure and temperature, gradually moulding around your body's contours. Its slow recovery can create the familiar sinking sensation that some people enjoy but others find restrictive.
Simbatex® is designed to respond more quickly as you move, providing cushioning without the same slow-recovery sensation. This can be particularly appealing if you regularly change position during the night and prefer a mattress that adapts readily to your movements.
The difference isn't simply about softness or firmness. It's about how the material behaves under pressure and how quickly it responds when that pressure changes.
Why Does Simbatex® Have an Open Structure?
One of the main differences between Simbatex® and conventional memory foam is the way air passes through the material. Traditional dense memory foams can restrict airflow, potentially allowing warmth to accumulate around the sleeping surface.
Simbatex® uses an open structure designed to encourage air circulation. This helps create a more breathable cushioning layer while maintaining the supportive comfort people expect from foam.
In Simba's Hybrid® mattresses, the foam works alongside ventilated spring layers, contributing to a construction designed to manage warmth more effectively.
What Does Graphite Do in Simbatex® Foam?
Graphite is known for its ability to conduct heat, which makes it useful in materials designed for temperature management. Simba infuses Simbatex® foam with graphite to help move excess warmth away from the body.
This complements the foam's open structure, providing two approaches to temperature regulation within the same material. While the open structure encourages airflow, graphite helps conduct warmth away from areas where it might otherwise become concentrated.
Of course, your overall sleeping temperature also depends on your bedding, bedroom conditions and individual preferences.
Does Simbatex® Really Offer Five Times More Airflow?
Simba's current product information states that Simbatex® offers over five times more airflow than the memory foams included in its comparative testing. This claim is based on independent Intertek testing conducted in May 2025.
The tests compared Simbatex® against nine memory foams from three leading UK manufacturers, using individual foam samples under controlled conditions. This demonstrated a measurable difference in airflow between the tested materials.
Importantly, the claim relates to airflow through the foam samples, rather than suggesting that an entire mattress will feel five times cooler. It's a useful distinction when comparing mattress technologies and understanding what the test results actually demonstrate.
How Does Simbatex® Work with Aerocoil® Springs?
Simbatex® is designed to work as part of a complete mattress construction rather than providing every aspect of comfort and support independently. In Simba's standard Hybrid® range, it's combined with Aerocoil® microsprings, which compress individually as your body applies pressure.
The foam provides cushioning, while the springs contribute responsiveness and encourage airflow through the comfort layers. Depending on the mattress, additional supportive foam or steel springs provide stability underneath.
This combination allows Simba to bring together the contouring comfort associated with foam and the responsive support of springs.
Which Simba Mattresses Feature Simbatex® Foam?
Simbatex® appears throughout Simba's standard Hybrid® mattress range, including the Hybrid® Essential, Hybrid®, Hybrid® Pro and Hybrid® Luxe. However, these mattresses differ in their spring arrangements, comfort layers and overall depth.
The Hybrid® Ultra also incorporates Simbatex®, using two layers within its deeper construction. Although the material is shared across these models, the complete mattress experience varies according to the combination of technologies.
When comparing mattresses, it's therefore worth considering the entire construction rather than choosing based on foam alone.
Can Simbatex® Improve Your Existing Mattress?
You don't necessarily need a completely new mattress to experience Simbatex® cushioning. Simba also incorporates the material into its mattress topper range, allowing you to add an extra comfort layer to an existing sleeping surface.
For example, the Cool Foam Mattress Topper combines Simbatex® with a contoured foam base designed to encourage airflow. You can explore our single mattress toppers with Simbatex® cushioning to see how the technology can be incorporated into your existing bed.
A topper can adjust the comfort of a mattress that's still in good condition, although it won't correct significant structural wear or inadequate underlying support.
FAQs
Yes. Simba identifies Simbatex® as CertiPUR® foam in its mattress specifications. This certification relates to requirements for foam materials, including restrictions on certain substances.
Simba's Natural Hybrid® mattresses use a different approach to cushioning, incorporating natural materials alongside Aerocoil® technology. They aren't built around the same Simbatex® comfort layer used in the standard Hybrid® range.
The foam itself shouldn't be placed in a washing machine. Instead, follow the care instructions for your particular mattress or topper, including any guidance about removable, washable covers.
Simbatex® contributes to the cushioning feel of a mattress, but firmness depends on the entire construction. Spring arrangements, supportive base materials and additional comfort layers all influence the finished sleeping surface.
Yes. The Hybrid® Essential features a graphite-infused Simbatex® comfort layer above its Aerocoil® springs, bringing the technology into Simba's entry-level Hybrid® mattress construction.
