Plank Firm Mattress: Firmness Prices Trial and Feedback
By The Mattress Review Editorial Team · Published September 25, 2026 · Facts last checked September 20, 2026
The Plank Firm mattress measures 10 inches tall with a flippable all-foam design that provides Firm and Ultra-Firm sides. It targets back and stomach sleepers who need maximum support and minimal sink.
Owners on retailer pages and forums often mention strong edge support and motion isolation, while side sleepers frequently note the surface feels too rigid for comfort.
Skip this model if you prefer cushioning or sleep on your side; consider the hybrid Plank Firm Luxe version or other brands for softer options.
What construction details define the Plank Firm mattress?
The Plank Firm mattress uses an all-foam build with a high-density foam core, Supreme Response Comfort Foam, and a quilted top that adds zero loft. This produces a 10-inch profile that stays consistent across both sides.
The design comes from Brooklyn Bedding and is manufactured in Glendale, Arizona. GreenGuard Gold and CertiPUR-US certifications apply to the foams used.
Owners on review sites frequently mention minimal off-gassing compared with other foam mattresses. The flippable layout lets users switch between sides without buying a topper.
- High-density foam core for base support
- Supreme Response Comfort Foam layer
- Quilted cover with zero loft
- Optional GlacioTex cooling cover add-on
How firm are the two sides of the Plank Firm mattress?
The Plank Firm mattress offers a Firm side rated around 7-8 out of 10 and an Ultra-Firm side rated 9-10 out of 10. Both sides target back and stomach sleepers who want little give.
The company states the flippable construction supports spinal alignment, though this is not medical advice. Side sleepers on aggregator sites often report pressure at the hips and shoulders.
Compared with the Plank Firm Luxe hybrid, the all-foam version feels slightly firmer on the extra-firm side. Specialty sizes such as Split Cal King and Short Queen maintain the same dual-firmness ratings.
| Model | Height | Firm Side | Ultra-Firm Side |
|---|---|---|---|
| Plank Firm | 10 inches | 7-8/10 | 9-10/10 |
| Plank Firm Luxe | 13 inches | 7/10 | 9-9.5/10 |
What are current Queen prices and available sizes for the Plank Firm mattress?
Queen Plank Firm pricing ranges from $999 on sale to the $1,332 MSRP listed on the brand site. The Plank Firm Luxe Queen ranges from $1,299 to $1,598 depending on promotions observed in 2025-2026 sources.
Standard sizes run from Twin through Cal King, with additional options including Split Cal King, Short Queen, Olympic Queen, and RV King. Free shipping applies to the contiguous United States via FedEx after 2-5 business days of production.
Prices reflect ranges reported across multiple review sources and the official site. Shoppers should confirm current offers directly with the seller because discounts vary.
What trial and warranty terms apply to the Plank Firm mattress?
The Plank Firm mattress includes a 120-night trial that requires at least 30 nights of use before a return is allowed. A $99 return fee may apply for mattresses, and shipping to Alaska, Hawaii, or Canada is non-refundable.
A limited lifetime warranty covers both the Plank Firm and Plank Firm Luxe models. The warranty is described as 10 years full coverage followed by prorated years.
Production and shipping timelines total roughly 3-10 days within the contiguous US. Owners on forums sometimes mention delays during peak periods, so checking current lead times is recommended.
Which sleep positions suit the Plank Firm mattress best?
Back and stomach sleepers are the primary audience for the Plank Firm mattress because both sides limit sink and maintain spinal alignment. The Ultra-Firm side provides the highest level of support for heavier users.
Side sleepers on review aggregators and Reddit threads commonly report discomfort from the lack of cushioning. The brand focuses on ultra-firm needs rather than pressure relief for side positions.
The American Chiropractic Association endorsement appears on the company site for firm support benefits, but this does not replace advice from a clinician for ongoing pain issues.
What owner feedback themes appear for the Plank Firm mattress?
Owners on retailer pages and forums often mention strong edge support and good motion isolation for couples. Positive comments also note the value during sales and the usefulness of the flippable design.
Negative themes include reports of sleeping warm without the optional cooling cover and concerns about long-term durability raised in multi-year Reddit discussions. Some owners describe return-process frustrations.
No major Plank-specific recalls or lawsuits appear in available sources. A parent-company settlement on discount advertising from 2020-2024 is documented but does not involve product defects.
How does the Plank Firm mattress compare with the Plank Firm Luxe?
The Plank Firm is an all-foam 10-inch model while the Plank Firm Luxe is a 13-inch hybrid with 6-inch pocketed coils. Both remain flippable with similar firmness ratings.
The Luxe version adds coil layers that some owners associate with slightly better airflow. Pricing for the Luxe Queen sits higher, typically $1,299-$1,598 versus $999-$1,332 for the standard Firm Queen.
Both models share the 120-night trial, limited lifetime warranty, and optional GlacioTex cover. Shoppers seeking maximum firmness at a lower price often choose the all-foam Plank Firm.
Related reading: Nectar Mattress Review · Saatva Mattress Review · Purple Mattress Review · Casper Mattress Review · Helix Mattress Review
Frequently asked questions
Is the Plank Firm mattress good for stomach sleepers?
The Ultra-Firm side provides the highest support level and is frequently chosen by stomach sleepers who want minimal sink. Side sleepers usually find both sides too rigid.
Does the Plank Firm mattress sleep hot?
Some owners report warmth without the optional GlacioTex cooling cover. The all-foam construction lacks coils that aid airflow in the Luxe model.
What is the return fee for the Plank Firm mattress?
A $99 return fee may apply after the required 30 nights of the 120-night trial. Shipping outside the contiguous US is non-refundable.
Is the Plank Firm mattress available in Split Cal King?
Yes, specialty sizes including Split Cal King, Short Queen, and Olympic Queen are offered alongside standard Twin to Cal King dimensions.
Who owns the Plank brand?
Plank is owned by Brooklyn Bedding, also known as 3Z Brands, and manufactured in Glendale, Arizona.
Some owners in multi-year Reddit threads raise durability questions after several years of use; the limited lifetime warranty includes a prorated period after the first 10 years, so review full terms before purchase.