Koala Calm As Mattress (Double) vs OTTY Essential Hybrid 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

OTTY Essential Hybrid Mattress (Double)

8.8/10 Great

4.4★ (3,600 owners)

Memory foam + pocket springs, 100-night, 10-year, UK made. OTTY entry hybrid.

Full Review

At a Glance

	Koala Calm As Mattress (Double)	OTTY Essential Hybrid Mattress (Double)
247Verdict Score	9.0/10	8.8/10
Owner Rating	4.5★ (4,800)	4.4★ (3,600)
Verdict	Excellent	Great
Trial	120 nights (longest)	100 nights
Warranty	10 years	10 years

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 OTTY Essential Hybrid Mattress (Double) is worth considering if Memory foam + pocket springs, 100-night, 10-year, UK made. OTTY entry hybrid. 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

OTTY Essential Hybrid Mattress (Double)

UK manufactured — OTTY's UK factory commitment at entry hybrid pricing
Memory foam + pocket springs deliver pressure relief and motion isolation at an accessible price
100-night trial with UK customer service and collection
Under £400 — UK-made hybrid at the most accessible OTTY price
OTTY Pure Plus Hybrid is the latex upgrade — this is the budget path into the range

Memory foam rather than natural latex — less responsive bounce than OTTY Pure Plus
Less sophisticated than Pure Plus Hybrid at the same brand

FAQ

Which is better, Koala Calm As or OTTY Essential Hybrid?

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 OTTY Essential Hybrid best suited to?

Memory foam + pocket springs, 100-night, 10-year, UK made. OTTY entry hybrid.

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. OTTY Essential Hybrid Mattress (Double): Memory foam rather than natural latex — less responsive bounce than OTTY Pure Plus; Less sophisticated than Pure Plus Hybrid at the same brand.

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 OTTY Essential Hybrid Mattress (Double) at 4.4★ from 3,600.

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