Koala Calm As Mattress (Double) Review (2026): 9.0/10

Name: Koala Calm As Mattress (Double)
Brand: Koala
Rating: 4.5 (4800 reviews)

Pros & Cons

✓ Pros

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

✗ Cons

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

Key Specifications

Trial	120 nights (longest)
BCorp	Certified
Infusion	Copper (antimicrobial)
Foam	Open-cell
Warranty	10 years
Brand	Koala Australian

Performance

Koala Calm As provides B-Corp certification, 120-night trial and copper-infused cooling in an Australian design. Leesa is the other B-Corp mattress reviewed — Koala adds the longest non-split trial period and copper antimicrobial properties. For ethically-driven buyers who want third-party verified B-Corp accountability with maximum trial duration, Koala makes the strongest case. On paper the headline numbers are trial of 120 nights (longest), bcorp of Certified, infusion of Copper (antimicrobial), foam of Open-cell, warranty of 10 years, brand of Koala Australian. Its standout is that 120-night trial — the longest single-period trial alongside dreamcloud reviewed. Owners often find a waterproof mattress protector a worthwhile addition to this setup.

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Owner Essentials

AMAZON Koala Calm As Mattress (Double) Exact model — check latest price Check Price → AMAZON Mattress Protector Protect your investment Check Price → AMAZON Memory Foam Pillow Complete your setup Check Price →

Build Quality & Design

Beyond that, owners and the spec sheet point to a few more genuine strengths. B-Corp certified — Koala's environmental and social standards verified by third-party assessment. Copper-infused open-cell foam provides antimicrobial properties alongside cooling. For those looking to complement it, a set of memory foam pillows is commonly paired with this product. We can't bench-test durability, but the depth of positive long-term owner feedback is the best available proxy for how it holds up.

Value for Money

It isn't flawless. 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. Whether those matter depends entirely on how you'll use it. At the premium price point, the trade-offs are easy to live with for the right buyer. It's the right call for Look elsewhere if you're among

Final Verdict

9.0/10 Excellent

★★★★★ 4.5★ (4,800 Amazon reviews)

Koala Calm As provides B-Corp certification, 120-night trial and copper-infused cooling in an Australian design. Leesa is the other B-Corp mattress reviewed — Koala adds the longest non-split trial period and copper antimicrobial properties. For ethically-driven buyers who want third-party verified B-Corp accountability with maximum trial duration, Koala makes the strongest case.

FAQ

Is the Koala Calm As Mattress (Double) worth the money?

Koala Calm As provides B-Corp certification, 120-night trial and copper-infused cooling in an Australian design. Leesa is the other B-Corp mattress reviewed — Koala adds the longest non-split trial period and copper antimicrobial properties. For ethically-driven buyers who want third-party verified B-Corp accountability with maximum trial duration, Koala makes the strongest case.

Who should NOT buy the Koala Calm As Mattress (Double)?

Is the Koala Calm As Mattress (Double) available in the UK and US?

Yes — we list both Amazon UK and US links. Always verify voltage compatibility (UK 230V, US 120V).

What's the biggest drawback of the Koala Calm As Mattress (Double)?

Less brand recognition in UK vs Emma, Eve or Simba

What do owners say about the Koala Calm As Mattress (Double)?

4.5★ from 4,800 verified Amazon owners. 120-night trial — the longest single-period trial alongside DreamCloud reviewed

How does the Koala Calm As Mattress (Double) compare to similar mattresss?

At 9.0/10, it ranks among the strongest options we've reviewed in this category. See our Koala Calm As comparisons for direct head-to-head detail against specific alternatives.