Emma Premium Mattress Topper
Our verdict · The thickest, most cushioning topper here, best bought in a sale as the king RRP is around £515.
Buy it if
You want maximum cushioning on a firm or ageing mattress and can catch it in a sale.
Skip it if
You want a lightweight, budget or spring-supportive topper, or dislike the deep-sink foam feel.
Where to get it
Emma Premium Mattress Topper
King RRP ~£515, frequently discounted; indicative
Indicative price at the time of review.
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Emma's Premium topper is the deepest here at 9cm, with two layers of foam: a top layer using graphite-infused ThermoSync material intended to draw heat away, over a comfort layer. Reviewers report it contours closely around hips and shoulders while still feeling supportive, which is why it earns our deep-cushioning award. Its weakness is price: the king RRP is around £515 (indicative), though Emma and its stockists discount toppers heavily and frequently, so we would only buy it in a sale. It ranks below the Panda and Simba because that headline price is hard to justify at full RRP, but its 9cm depth is the main reason to choose it for a mattress that feels too firm. It comes with a 30-night trial.
The good & the bad
Pros
- 9cm depth gives the most cushioning here
- Graphite-infused ThermoSync top layer aims to reduce heat build-up
- 30-night home trial to test the feel
Cons
- King RRP of around £515 is steep unless bought in a sale
- Very deep foam can feel enveloping and warm for those who dislike sinking in
How it compares
| Pick | WATTB Score | Price | Best for |
|---|---|---|---|
| 1.Panda Memory Foam Bamboo Mattress Topper | 93/100 | ~£160 (king); from £99.95, indicative | overall |
| 2.Simba Hybrid Mattress Topper | 90/100 | ~£399 (king), indicative | support |
| 3.Emma Premium Mattress TopperThis pick | 86/100 | King RRP ~£515, frequently discounted; indicative | deep cushioning |
| 4.Silentnight Airmax Mattress Topper | 81/100 | ~£41 (king), indicative | budget |
| 5.John Lewis Natural Collection British Wool Mattress Topper | 80/100 | ~£110 (king), indicative | natural |
Key facts
- Best for
- deep cushioning
- Typical cost
- King RRP ~£515, frequently discounted; indicative
- Depth
- 9cm, two foam layers
- Cooling
- Graphite-infused ThermoSync top layer
- Cover
- Removable, breathable
- Trial
- 30-night home trial
- Feel
- Deep, cushioning, medium firmness
Researched by WATTB
- Published
- 13 September 2026
- Updated
- 13 September 2026
- Last verified
- 13 September 2026
- Sources
- 7 sources
We research and rank options from public data, official information and published reviews. How we research →
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