Simba Hybrid Inter 1500 Pocket Mattress
The Simba Hybrid Inter 1500 Pocket is a medium-firm hybrid, 23cm deep, that pairs up to 1,500 titanium alloy Aerocoil® microsprings with graphite-infused Simbatex® foam, which means you get a springy, responsive feel with heat drawn away from your body as you sleep.
- Medium-firm support without the sink
- Minimises partner disturbance
- 200-night trial & 10-year guarantee
£412
Get the lowest price we've found
The Simba Hybrid Inter 1500 comes in five UK sizes, from Single to Super King, and sits at the more affordable end of Simba's range. You also get a 200-night trial and a 10-year guarantee direct from Simba, with free returns during the trial if it turns out not to suit you.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
23
Number of Layers
5
Trial Period (nights)
200
Warranty (years)
10
Price Range
£412 to £718
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
CertiPUR
Assessed from Simba's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
This mattress suits sleepers who want a supportive, medium-firm feel without the sink of an all-foam bed. The conical Aerocoil® microsprings, made in Leeds, respond to pressure independently, which means less motion transfer if you share your bed. The Simbatex® layer uses open-structure foam infused with graphite to dissipate heat, so it should feel cooler than standard memory foam. A zip-off, washable top cover is a practical touch for allergy sufferers or anyone who likes a genuinely clean sleep surface. Add the 200-night trial, free delivery to most of the UK and a 10-year guarantee, and there's plenty of room to change your mind. The foams are simpler than Simba's pricier models, but the essentials are here.
Key features & layer details
Knitted top cover
A 500g knitted cover with a zip-off, washable sleep surface. That means you can keep the top of the mattress genuinely fresh rather than just airing it.
Aerocoil® microsprings
Up to 1,500 conical 25mm pocket springs made from titanium alloy, manufactured in Leeds and enclosed in a polypropylene pocket. Each spring moves independently, which means the mattress responds to your shape rather than tilting you towards a partner.
Simbatex® foam comfort layer
Open-structure CertiPUR® foam infused with graphite to dissipate heat. In practice, this means warmth is drawn away from you rather than building up under your back.
CertiPUR® foam comfort layer
A further CertiPUR® foam layer for cushioning. CertiPUR® certification means the foam contains no heavy metals such as mercury or lead.
Support base
A seven-zoned CertiPUR® foam base. The zoning gives firmer support under heavier areas like your hips and a slightly softer feel at your shoulders.
Layer details from simbasleep.com product page, September 2026.
Best suited for?
Couples
Independently moving Aerocoil® microsprings respond to pressure separately, which means less motion transfer, so one person turning over is less likely to disturb the other.
Warm sleepers
The Simbatex® comfort layer is open-structure foam infused with graphite to dissipate heat, so it should feel cooler than standard memory foam.
Allergy sufferers
A zip-off, washable top cover lets you keep the sleep surface genuinely clean, rather than just airing the mattress and hoping for the best.
Back sleepers
The medium-firm feel and seven-zoned support base give firmer support under the hips and a slightly softer feel at the shoulders, keeping you supported without sinking in.
If you prefer a soft, cradling feel, the medium-firm tension here may feel a little unyielding, particularly for lightweight side sleepers. At 23cm deep it's also shallower than some hybrids, so if you like a tall, hotel-style profile this probably isn't the one.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Simba Hybrid Inter 1500 Pocket Mattress
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FAQ's
Is the Simba Hybrid Inter 1500 firm or soft?
Simba describes it as medium-firm. That suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm for comfortable pressure relief at the shoulder and hip.
Does the Simba Hybrid Inter 1500 come with a trial?
Yes. Simba offers a 200-night trial when you buy direct, with free returns during that period, so you can send it back if it doesn't suit you. There's also a 10-year guarantee.
Does the Simba Hybrid Inter 1500 sleep hot?
It's designed not to. The Simbatex® comfort layer uses open-structure foam infused with graphite to dissipate heat, and the pocket microsprings allow more airflow than a solid foam core. Hot sleepers should find it cooler than a typical all-foam mattress.
How deep is the Simba Hybrid Inter 1500 mattress?
It's 23cm deep. That's a fairly slim profile for a hybrid, so standard fitted sheets will fit easily, but it won't give you the tall, built-up look of deeper mattresses.
What sizes does the Simba Hybrid Inter 1500 come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Delivery is free as standard to most of the UK, with seven-days-a-week delivery available.
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