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Tom’s Guide
Tom’s Guide
Technology
Ruth Jones

Is the Plank Firm mattress worth it? We tried this extra firm bed to find out

the Plank Firm Plank Firm Future
The Brooklyn Bedding The Plank Mattress on a luxury bedframe in a neutral bedroom with warm lighting.

The double-sided Plank Firm is a flat, firm mattress designed for sleepers who want strong support with minimal cushioning. It claims to be the 'firmest mattress ever' but is that true? Our sleep team went hands-on with the Plank Firm at 3Z Labs in Arizona to see if this specialist mattress delivers on its promise. Here's what you need to know...

Plank Firm mattress specs

Type: All-foam (dual-sided)
Firmness (1-10): Firm side 8 (we rate it 8); Extra firm 10 (we rate it 9)
Height: 9"
Trial period: 120 nights
Warranty: 10 years
Sale price: From $561 at Plank Mattress

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