The short answer: Buy the 10-inch foam if you are a stomach or back sleeper who needs very firm; the 13-inch Luxe hybrid if you want the same with coils, better edges and more airflow. Skip both if you sleep on your side.
Brooklyn Bedding Plank Firm (10 in foam) (Queen)
A deliberately hard, two-sided foam bed for people who have been sleeping on the floor to get relief.
Why it is here: Two firmness levels in one bed, both firm, and a maker willing to call the hard side a ten.
- Sold by the maker's own Amazon store
- 365-night home trial
- 10-year warranty
- Fiberglass-free
Scale: maker's number.
- Side sleepers
- Back sleepers
- Stomach sleepers
- Combination sleepers
- Build
- All-foam, 10 in, flippable: one firm side, one extra-firm side
- Trial
- 365 nights
- Warranty
- 10 years
- Sold by
- 3Z Brands (the maker's Amazon storefront)
- Weight
- 950 lb listed limit
- Price band
- Mid-range
Good fit if
You sleep on your stomach or back, your hips sink on every bed you try, and you want very little give.Look elsewhere if
You sleep on your side for any part of the night. Shoulders and hips get little cushioning here.
Brooklyn Bedding Plank Firm Luxe (13 in hybrid) (Queen)
The Plank's firm idea with coils added: more bounce, better edges and more airflow than the foam version.
- Sold by the maker's own Amazon store
- 365-night trial, per the bullets
- Fiberglass-free
- Rated to 950 lb
Scale: maker's number.
- Side sleepers
- Back sleepers
- Stomach sleepers
- Combination sleepers
- Build
- Hybrid, 13 in, flippable, 6 in coil layer (up to 961 coils depending on size)
- Trial
- 365 nights (one spec field says 120; confirm at checkout)
- Warranty
- Not stated on listing
- Sold by
- 3Z Brands (the maker's Amazon storefront)
- Weight
- 950 lb listed limit
- Price band
- Upper
Good fit if
You need a firm bed, weigh more, or share the bed and want the coil layer to keep the surface level.Look elsewhere if
You want any real softness on top. Even the 'medium-firm' side is firm by most people's standards.Other versions: Queen with cooling top
Plank Firm specs at a glance
| Build | All-foam, 10 in, flippable: one firm side, one extra-firm side |
|---|---|
| Firmness | Firm / Extra Firm (flip) |
| Zoned support | No zoning claimed |
| Trial | 365 nights |
| Warranty | 10 years |
| Sold by | 3Z Brands (the maker's Amazon storefront) |
| Certifications | CertiPUR-US, GREENGUARD Gold, fiberglass-free (per listing) |
| Weight limit | 950 lb listed limit |
| Price band | Mid-range |
| ASIN (queen) | B07G9PYQB1 |
Two versions
Plank Firm (10-inch foam). All foam, flippable: one side firm, the other extra firm. The maker rates the extra-firm side a ten on its scale. 10-year warranty, 365-night trial, 950 lb limit.
Plank Firm Luxe (13-inch hybrid). Adds a 6-inch coil layer (up to 961 coils, size-dependent). Same flip idea, same 950 lb limit. One spec field says 120 nights and the bullet points say 365, so confirm the trial at checkout.
Who needs this
- Stomach sleepers whose hips sink on everything.
- Heavier back sleepers.
- People who already know they sleep better on hard surfaces.
Who should skip the Plank Firm
Side sleepers. Both sides are firm. The softer side is firm by most people's standards.
About the chiropractic claim
The listing mentions an American Chiropractic Association study. We could not find it published, so we do not rely on it. The bed is on our list for its firmness and its flip design.
If the Plank Firm is not the one
Serta iComfort Elana (Firm, 11.5 in) (Queen)
A firm, zoned memory-foam bed that Serta itself pitches at stomach and back sleepers.
- Sold and shipped by Amazon.com
- 100-night home trial
- 10-year warranty
- Zoned support
Scale: our reading of the maker's label.
- Side sleepers
- Back sleepers
- Stomach sleepers
- Combination sleepers
- Zoned support
- Build
- All-foam, 11.5 in, graphite-infused memory foam, 5 ZoneResponse design
- Trial
- 100 nights
- Warranty
- 10 years (limited)
- Sold by
- Amazon.com
- Zoning
- 5 ZoneResponse design (maker's wording)
- Price band
- Upper
Good fit if
You sleep on your stomach or back, want foam rather than coils, and like a cool-touch cover.Look elsewhere if
You want it to feel right on night one; Serta says to allow up to 60 days to adjust.
VISCOFLEX Extra Firm 14 in Hybrid (Queen)
A low-cost extra-firm hybrid with a year-long trial.
- Sold by the maker's own Amazon store
- 365-night home trial
- 10-year warranty
- Zoned support
Scale: our reading of the maker's label.
- Side sleepers
- Back sleepers
- Stomach sleepers
- Combination sleepers
- Zoned support
- Build
- Hybrid, 14 in, 500 high-compression springs listed, 7-zone layout
- Trial
- 365 nights
- Warranty
- 10 years
- Sold by
- VISCOFLEX (the maker's storefront)
- Zoning
- 7-zone layout (maker's wording)
- Price band
- Budget
Good fit if
You want very firm on a budget and like knowing you can send it back within a year.Look elsewhere if
You sleep on your side.
Plank Firm: what readers ask
How firm is the Brooklyn Bedding Plank Firm?
The maker rates the extra-firm side a ten on its scale; the other side is firm.
Is the Plank Firm good for back pain?
For stomach sleepers and some heavier back sleepers, yes. Side sleepers usually find it too hard.
Neutral Spine is not a medical provider. A mattress can make sleep more comfortable; it does not treat a spinal condition. Pain that follows an injury, spreads down a leg, or comes with numbness, weakness or fever needs a doctor first. Full disclaimer.