Koala Calm As Mattress (Double) vs Silentnight Mirapocket 1000 Mattress (Double) (2026)
Which is better? We compared both on score, owner ratings, pros and cons.
Koala Calm As Mattress (Double)
Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified.
Full Review
Silentnight Mirapocket 1000 Mattress (Double)
1000 pocket springs, Miracoil, medium tension, No-Roll-Together. UK's favourite mattress brand.
Full ReviewAt a Glance
| Koala Calm As Mattress (Double) | Silentnight Mirapocket 1000 Mattress (Double) | |
|---|---|---|
| 247Verdict Score | 9.0/10 | 8.8/10 |
| Owner Rating | 4.5★ (4,800) | 4.5★ (22,400) |
| Verdict | Excellent | Great |
Quick Verdict
Both are strong choices, but the Koala Calm As Mattress (Double) edges ahead with a 9.0/10 vs 8.8/10. Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified. That said, the Silentnight Mirapocket 1000 Mattress (Double) is worth considering if 1000 pocket springs, Miracoil, medium tension, No-Roll-Together. UK's favourite mattress brand. Check the current price on Amazon →
Pros & Cons Side by Side
Koala Calm As Mattress (Double)
- 120-night trial — the longest single-period trial alongside DreamCloud reviewed
- B-Corp certified — Koala's environmental and social standards verified by third-party assessment
- Copper-infused open-cell foam provides antimicrobial properties alongside cooling
- Australian design heritage applied to UK market — different design philosophy from UK brands
- 10-year warranty with B-Corp accountability for long-term quality commitment
- Less brand recognition in UK vs Emma, Eve or Simba
- Copper infusion adds cost without the temperature improvement of true airflow hybrids
- Australian brand with UK fulfilment — customer service response from Australian headquarters
Silentnight Mirapocket 1000 Mattress (Double)
- 1000 pocket springs contour independently to body shape and movement
- Miracoil technology eliminates the 'roll together' effect for couples — each side moves independently
- UK's best-selling mattress brand — Silentnight's 75-year heritage in British bedrooms
- 22,400 Amazon reviews at 4.5★ — the most validated mainstream mattress available
- Available in most UK supermarkets and furniture stores — widest return/warranty support
- Traditional pocket spring — no memory foam comfort layer for pressure relief
- Medium tension only on this model — those needing soft or firm need different variants
- Lower technology complexity than Emma, Eve or Simba at similar pricing
FAQ
Which is better, Koala Calm As or Silentnight Mirapocket 1000?
Both are strong choices, but the Koala Calm As Mattress (Double) edges ahead with a 9.0/10 vs 8.8/10. Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified. That said, the Silentnight Mirapocket 1000 Mattress (Double) is worth considering if 1000 pocket springs, Miracoil, medium tension, No-Roll-Together. UK's favourite mattress brand.
Is the Koala Calm As worth the extra cost?
Yes — Koala Calm As Mattress (Double) scores higher at 9.0/10 vs 8.8/10.
Who is the Koala Calm As best suited to?
Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified.
Who is the Silentnight Mirapocket 1000 best suited to?
1000 pocket springs, Miracoil, medium tension, No-Roll-Together. UK's favourite mattress brand.
What are the main downsides of each?
Koala Calm As Mattress (Double): Less brand recognition in UK vs Emma, Eve or Simba; Copper infusion adds cost without the temperature improvement of true airflow hybrids. Silentnight Mirapocket 1000 Mattress (Double): Traditional pocket spring — no memory foam comfort layer for pressure relief; Medium tension only on this model — those needing soft or firm need different variants.
Do owner ratings agree with our verdict?
Largely, yes — Koala Calm As Mattress (Double) sits at 4.5★ from 4,800 verified Amazon owners, and Silentnight Mirapocket 1000 Mattress (Double) at 4.5★ from 22,400.
As an Amazon Associate we earn from qualifying purchases. Links below are affiliate links.
Popular in Mattresses
Also Worth Considering
Vi-Spring Herald Superb Mattress (Double)
Calico pocket springs, natural wool + cotton, hand-tufted Plymouth UK, 30-year guarantee. British luxury benchmark.
Read Full Review →
Hypnos Pillow Top Wool Mattress (Double)
Hand-tufted, British wool, pocket springs, Royal Warrant. The hotel mattress in your home.
Read Full Review →
Hypnos Orthos Support Mattress (Double)
Hand-tufted, ReActivePro springs, natural fillings, Royal Warrant, UK made. The royal mattress.
Read Full Review →