The Simba Hybrid is a 25cm medium-firm mattress pairing 1,900 Aerocoil microsprings with a nine-zone foam base, for most sleepers.
The Simba Hybrid is a 25cm, five-layer mattress that combines 1,900 conical Aerocoil microsprings with graphite-infused Simbatex foam and a nine-zone foam base. Simba rates the feel medium-firm, which we place at 6 out of 10, and it is the model the rest of the Simba range is measured against, with a regular price from £699 for a single.
The build is simpler than the Pro above it: one spring layer and no steel base. The layer list below is taken from Simba’s UK product page.
| Layer | Material | What it does |
|---|---|---|
| 1. Cover | 500g knitted cover with zip-off top | Machine washable, line dry |
| 2. Comfort | Simbatex foam with graphite, extra deep | Open-structure cushioning that lets heat escape |
| 3. Springs | 1,900 25mm conical Aerocoil springs, titanium alloy, made in Leeds | Respond to pressure, limit motion transfer |
| 4. Core | Thick open-structure CertiPUR foam | Structural support and airflow |
| 5. Base | Nine-zone CertiPUR foam | Firmer under hips and shoulders |
Most sleepers who want a middle-of-the-road feel. A systematic review of 24 controlled trials in Sleep Health (Radwan et al., 2015) concluded that a medium-firm, custom-inflated (self-adjusted) mattress is optimal for sleep comfort, quality and spinal alignment; the medium-firm part is where the Hybrid sits. Back and combination sleepers are the natural fit. Couples will notice that the foam base gives softer edges than the steel-sprung Hybrid Pro, which is the main reason to pay more for the Pro. Within the range the Hybrid sits between the 20cm Essential, with up to 1,000 springs and a five-zone base, and the 28cm Pro, with up to 4,800 springs over steel. It has 900 more springs than the Essential and a nine-zone base, which is where most of the extra money goes.
Regular prices at the time of writing (September 2026). The Hybrid is the only mattress in this part of the range sold in all eight sizes, including the continental 90x200, 140x200 and 160x200.
| Size | Dimensions (cm) | Regular price |
|---|---|---|
| Single | 90 x 190 | £699 |
| Small double | 120 x 190 | £899 |
| Double | 135 x 190 | £899 |
| King | 150 x 200 | £999 |
| Super king | 180 x 200 | £1,099 |
| EU single | 90 x 200 | £699 |
| EU double | 140 x 200 | £999 |
| EU queen | 160 x 200 | £1,099 |
The foams carry CertiPUR certification, which under the EUROPUR scheme means no mercury, lead or cadmium, no phthalate plasticisers and low VOC emissions. Delivery is free to most of the UK, usually seven days a week, with a 200-night trial and a 10-year guarantee against manufacturing faults.
| Brand | Simba |
|---|---|
| Material | 500g knitted cover with zip-off washable top, extra-deep graphite-infused Simbatex foam, 1,900 titanium-alloy Aerocoil pocket microsprings, a CertiPUR foam core and a nine-zone CertiPUR foam base. |
| Firmness | Medium firm (6/10) |
| Height | 25 cm |
| Sleep trial | 200 nights |
| Warranty | 10 years |
| Delivery | Free delivery to most of the UK |
| Available sizes | 90x190, 90x200, 120x190, 135x190, 140x200, 150x200, 160x200, 180x200 |
| Overall score | 8.2/10 |
| Certifications | CertiPUR |
“The Simba Hybrid is the sensible default in the range, medium-firm and 25cm deep for about 30% less than the Hybrid Pro in a double. Pick the Pro instead if you share the bed and sit on the edge a lot, because the Hybrid's all-foam base gives less perimeter support.”
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