Plank Firm
Plank Firm Luxe
Experience the firmest, flattest, and most supportive hybrid sleep with the Plank Firm Luxe mattress. This mattress is designed for those who prefer a very firm sleeping surface, offering two firmness options in one flippable design: Firm (rated 8 out of 10) and Extra Firm (rated 10 out of 10). It's endorsed by the American Chiropractic Association (ACA) for reducing spinal stress and improving lumbar support. The construction features high-density foams for firm support while still soothing hips and shoulders, and a 6-inch core of individually encased Ascension Firm Coils that provide targeted support and superior motion isolation. For hot sleepers, there is an optional GlacioTex™ Cooling Cover upgrade that uses cool tech fibers for a cool-to-the-touch experience. The mattress layers include a quilted top (.75”), 2” High-Density Support Foam, the 6” coil core, another 2” High-Density Support Foam, and a 1” Supreme Response Comfort Foam, all designed to maintain a minimal loft for that traditionally firm feel. It ships free in 3-5 business days and comes with a 120-night trial and a limited lifetime warranty.
$561.75
Owner Satisfaction
4.4
/ 5
Category Rank
2313
/ 6845
#2313 in Mattresses
Price vs Category Average
-66%
Below average
Who it's for
- Superior Orthopedic Support
- Enhanced Durability and Edge Support
- Effective Temperature Neutrality
Who should skip it
- Poor Pressure Relief for Side Sleepers
- Niche Appeal and Adjustment Period
- Higher Price Point
Features
- Flippable design offering Firm (8/10) and Extra Firm (10/10) sides
- Endorsed by the American Chiropractic Association (ACA)
- 6-inch core of individually encased Ascension Firm Coils
- High-density foams for firm support
- Optional GlacioTex™ Cooling Cover available
- Superior motion isolation
- Breathable materials with open cell technology
What customers say
The customer sentiment surrounding the Plank Firm Luxe by Plank is overwhelmingly positive among its target audience, though highly polarizing overall. Reviewers consistently praise the mattress for delivering on its promise of extreme firmness, making it a standout choice for dedicated back and stomach sleepers. Many users report significant relief from chronic back pain, attributing this success to the unparalleled support and minimal sinkage provided by the high-density foam and coil construction. The quality of materials is frequently highlighted, suggesting excellent durability and a premium feel, justifying the 'Luxe' designation. Furthermore, the cooling technology is often cited as effective, preventing overheating throughout the night. However, the product's defining feature—its firmness—is also its primary drawback for a significant segment of the market. Side sleepers, or those who prefer even a moderate amount of contouring, often find the Plank Firm Luxe uncomfortably rigid, leading to pressure point discomfort. The 'Luxe' version, while slightly softer than the original Plank Firm, is still described as uncompromisingly hard. This polarization means that while satisfaction is extremely high among those who need maximum firmness, expectations must be managed carefully. Overall, the sentiment reflects a high-quality, specialized product that excels in its niche, earning strong loyalty from customers seeking therapeutic, unyielding support.
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