Koala Calm As Mattress (Double) vs Silentnight Eco Comfort Mattress (Double) (2026)

✍️ By the 247Verdict Editorial Team📅 Updated 05 October 2026

Which is better? We compared both on score, owner ratings, pros and cons.

Koala Calm As Mattress (Double)

9.0/10 Excellent

4.5★ (4,800 owners)

Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified.

Full Review

Silentnight Eco Comfort Mattress (Double)

8.9/10 Great

4.5★ (12,400 owners)

Eco recycled foam, Miratex, breathable, hypoallergenic, UK made, 5-year. The eco UK value mattress.

Full Review

At a Glance

	Koala Calm As Mattress (Double)	Silentnight Eco Comfort Mattress (Double)
247Verdict Score	9.0/10	8.9/10
Owner Rating	4.5★ (4,800)	4.5★ (12,400)
Verdict	Excellent	Great
Foam	Open-cell	Miratex 50% plant-based
Warranty	10 years	5 years

Quick Verdict

This is a genuine draw — both score within 0.15 points of each other. Koala Calm As Mattress (Double): Australian design, open-cell foam, copper-infused, 120-night trial, 10-year, B-Corp certified. Silentnight Eco Comfort Mattress (Double): Eco recycled foam, Miratex, breathable, hypoallergenic, UK made, 5-year. The eco UK value mattress. Choose based on your specific needs. 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 Eco Comfort Mattress (Double)

Eco Comfort fibres made from recycled plastic bottles — sustainable construction
Miratex eco foam made with up to 50% plant-based materials
Breathable and hypoallergenic — suitable for allergy sufferers
UK manufactured by Silentnight, the UK's most recognised mattress brand
12,400 reviews at 4.5★ — the most validated mid-range UK mattress reviewed

Foam-only — less motion isolation than pocket spring hybrids
5-year warranty trails premium 10-year alternatives
Medium feel only — no firmness customisation

FAQ

Which is better, Koala Calm As or Silentnight Eco Comfort?

Is the Koala Calm As worth the extra cost?

Yes — Koala Calm As Mattress (Double) scores higher at 9.0/10 vs 8.9/10.

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 Eco Comfort best suited to?

Eco recycled foam, Miratex, breathable, hypoallergenic, UK made, 5-year. The eco UK value mattress.

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 Eco Comfort Mattress (Double): Foam-only — less motion isolation than pocket spring hybrids; 5-year warranty trails premium 10-year alternatives.

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 Eco Comfort Mattress (Double) at 4.5★ from 12,400.

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