by The Plank Firm by Brooklyn Bedding is one of the firmest mattresses commercially available — a flippable design with Firm (8/10) on one side and Extra Firm (9.5/10) on the other. It targets stomach sleepers and those who've been failed by every "firm" mattress they've tried.
Plank Firm Overview
| Feature | Details |
|---|---|
| Type | All-foam flippable |
| Firmness Sides | Firm (8/10) / Extra Firm (9.5/10) |
| Height | 10.5" |
| Trial | 120 nights |
| Warranty | 10 years |
| Price (Queen) | $999–$1,249 (with Luxe upgrade) |
| CertiPUR-US | Yes |
Construction
- Top (Firm side): 0.5" TitanFlex comfort foam + high-density base
- Bottom (Extra Firm side): No comfort layer — direct to high-density base
- Core: 8" high-density polyfoam (firmest available)
- Luxe upgrade: Adds phase-change cooling fabric + 0.5" cooling gel layer
Who the Plank Is For
- Stomach sleepers — the primary target. The Firm side prevents pelvis sinkage; Extra Firm is for heaviest stomach sleepers (230+ lbs)
- Very heavy back sleepers (250+ lbs) — need more resistance than standard "firm" options provide
- People who've returned every mattress as "too soft" — the Plank's Extra Firm side is genuinely the hardest consumer mattress available
- Those transitioning from sleeping on the floor — provides firm-but-slightly-padded alternative
Who Should NOT Buy the Plank
- Side sleepers — almost universally too firm, causes shoulder and hip pressure points
- Back sleepers under 180 lbs — likely to develop pressure point pain on the lower back
- Those who run hot — the base model lacks cooling; Luxe upgrade required for hot sleepers
Plank vs Saatva Classic (Firm)
For stomach sleepers wanting luxury, Saatva Classic Firm delivers dual-coil support with significantly better breathability (coils allow airflow) and white-glove delivery. If you want firmness with luxury feel, Saatva wins. If you want maximum firmness at a lower price, Plank wins.
Verdict
Review verdict FAQ
Our default alternative to consider
Saatva Classic — queen $1,779 ($400 off)
If the mattress reviewed above isn't the right fit, the Saatva Classic is the mainstream luxury hybrid we benchmark against. 3 firmness options, 15–20 year lifespan, 365-night trial, lifetime warranty, free white-glove delivery + old-mattress removal.
Should you buy this mattress?
Depends on your primary requirement. If the review above meets your sleep position, firmness preference, and budget, it's a strong candidate. If you're unsure, the Saatva Classic is the safest mainstream alternative — three firmness options, 365-night trial, lifetime warranty.
What are the main drawbacks?
Every mattress has tradeoffs. Budget mattresses (under $700): shorter lifespan, often firmer-than-described. Mid-range ($700-1,500): usually solid but rarely excel at any one feature. Premium ($1,500+): worth the cost per year, but sticker shock is real.
How does it compare to the Saatva Classic?
Saatva Classic is the benchmark mainstream luxury hybrid: $1,779 queen, three firmness options, 15–20 year lifespan, zoned coil support, organic cotton cover. Any mattress at a similar price point should meet or beat Saatva's build quality and trial terms to justify itself.
How long does this kind of mattress actually last?
Natural latex: 15–20 years. Hybrid with pocketed coils: 10–15. All-foam high-density: 7–10. All-foam low-density: 3–5. Innerspring-only: 5–8. Durability scales with coil gauge, foam density, and build quality.
Plank Firm earns 4.2/5 for its very specific target audience. It does exactly what it promises — it's the firmest flippable consumer mattress available. Not for most sleepers. But for confirmed stomach sleepers and heavy sleepers who've been failed by every firm mattress, it's the definitive solution.
FAQ
Is the Plank Firm mattress too hard?
For most sleepers, yes. The Firm side (8/10) is appropriate only for stomach sleepers and very heavy back sleepers. The Extra Firm side (9.5/10) is one of the hardest consumer mattresses available — it's designed for people who have found every other "firm" mattress too soft. Side sleepers and average-weight back sleepers should not use this mattress.
Does Brooklyn Bedding make the Plank with cooling?
Yes — the Plank Firm Luxe upgrade adds a phase-change cooling fabric cover and a 0.5-inch cooling gel layer. The base model runs warm due to dense foam with limited airflow. Hot sleepers who need extreme firmness should choose the Luxe version, though a coil-based firm mattress (like Saatva Classic Firm) will still sleep cooler overall.
What's the difference between Plank Firm and Plank Extra Firm?
The Plank is a single flippable mattress with two sides: Firm (8/10, with 0.5 inch TitanFlex comfort layer) and Extra Firm (9.5/10, no comfort layer — direct to high-density base). You choose which side to sleep on based on your preference. Most users start on the Firm side and flip to Extra Firm if they still feel the mattress is too soft.
Related buying tips
Before making a purchase in this category, consider these essentials we recommend checking:
- Trial period — 100 nights minimum, 365 nights ideal for a major mattress or bedding purchase.
- Warranty — 10 years or longer for mattresses; 1-3 years for most bedding accessories.
- Return policy — ensure free returns are included, not store credit only.
- Certifications — CertiPUR-US for foam (no harmful chemicals), GOLS/GOTS for organic latex and cotton, OEKO-TEX Standard 100 for fabrics.
- Shipping — check if white-glove setup and old-mattress removal are included or cost extra.
For our complete shopping framework, see our 2026 best mattress buying guide.