Firmness
Medium Firm
Type
Hybrid
Depth (cm)
16
Number of Layers
5
Trial Period (nights)
100
Warranty (years)
1
Price Range
£399
Best Sleeping Position(s)
Certifications
Features CertiPUR® certified foams, ensuring no harmful chemicals.
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
If your child sleeps hot, the graphite-infused Simbatex® layer is the standout here: open-cell foam that lets warm air escape rather than trapping it the way traditional memory foam can. The 1500 pocket springs respond to your child's weight independently, which means proper support as they grow rather than a one-note foam feel. Edge support in the high definition foam layer helps the mattress hold its shape at the sides, useful when children sit or clamber on the edge. It's CertiPUR® certified, so free from harmful metals and dyes, and Simba is a National Bed Federation Approved Brand. Mattress Online lists a 100-night trial and free next day weekday delivery, terms specific to that retailer.
Key Features & what's inside
- Cover. A microquilted knitted cover in a criss-cross pattern, made with chemical-free fabrics. The elastane gives it stretch, so it moves with your child rather than pulling tight.
- Open-cell Simbatex® foam layer. Graphite-infused foam designed to dispel heat and fight overheating at night. Its open-cell structure offers thirty times more airflow than traditional memory foam, which means less of that clammy, sunk-in warmth.
- Spring comfort layer. A mixture of Aerocoil® and Conicoil® springs. These add a responsive, cushioned feel above the main support layers.
- High definition Simbatex® foam with edge support. A firmer, high definition foam layer with reinforced edges. That edge support helps the mattress stay stable when your child sits or sleeps near the sides.
- Zoned Simbatex® foam support base. A 12cm zoned foam base housing the 1500 pocket springs. This is where the real support comes from, keeping the spine aligned as your child grows.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
This is a bunk-specific single, so it won't suit adults or anyone wanting a double or larger. The slim 16cm profile is a safety feature for bunks, but if you want a deep, plush mattress for a standard bed frame, look elsewhere. It's also single-sided, so you can't flip it to extend its life.
Simba Hybrid 1500 Pocket Kids Bunk Mattress
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Is the Simba Hybrid 1500 Kids Bunk Mattress suitable for bunk beds?
Yes, it's designed specifically for bunks. At 16cm deep it sits low enough to keep your child below the guard rail, and parents in owner reviews on mattressonline.co.uk report it fits bunk beds securely.
How firm is the Simba kids bunk mattress?
The product page describes it as medium. That's a sensible middle ground for children, with 1500 pocket springs and foam layers balancing cushioning and support.
Does the Simba kids bunk mattress come with a trial?
Mattress Online lists a 100-night trial with this mattress. That trial is the retailer's own offer rather than a Simba guarantee, so check the terms if you buy elsewhere.
Do you need to flip the Simba Hybrid 1500 bunk mattress?
No. It's single-sided, so there's no need to flip it. The downside is you can't turn it over to even out wear, though you can still rotate it head to toe.
Is the Simba kids bunk mattress safe for children?
It's CertiPUR® certified, meaning it's free from harmful metals and dyes, and the cover uses chemical-free fabrics. It's also fire resistant to BS7177: 2008 for home use, and Simba is a National Bed Federation Approved Brand.
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