Experience Supreme Firmness — Without Compromise

Meet the Plank Firm, designed for those who demand steadfast support and a level sleep surface. Built to be ultra-firm, this mattress keeps your spine aligned, reduces pressure points, and helps you rest more fully.

Ultra-Firm Support. Dual-Sided Design. Chiropractor Endorsed.

The Plank Firm mattress is designed for sleepers who crave an ultra-firm sleep surface and optimal spinal alignment. Featuring a flippable design with two firmness levels — firm and extra-firm — this mattress provides customizable support that promotes a neutral spine and reduces pressure points.

Engineered with high-density support foam and minimal loft quilting, the Plank Firm delivers a flat, even surface ideal for back and stomach sleepers. Its optional GlacioTex™ cooling cover enhances breathability and keeps you comfortably cool all night.

Backed by a 120-night trial and endorsed by the American Chiropractic Association, the Plank Firm is the go-to choice for those who take their sleep — and their support — seriously.

Plank Firm vs. Plank Firm Luxe — Quick Comparison

What they have in common:

• Firm on one side, ultra-firm on the other (flippable design)
• Designed for back & stomach sleepers
• Promotes proper spinal alignment and reduces pressure points
• Optional cooling cover available
• Backed by a 120-night sleep trial (available for local DFW, Texas Residents only*)

Plank Firm 10" Foam Mattress

• All-foam construction with high-density support foam
• 10" profile with a flat, minimal, no-sink feel
• Ideal for sleepers who want the firmest, densest surface possible
• Excellent motion isolation
• Best for those who prefer a simple, traditional firm foam mattress

Plank Firm Luxe 13" Hybrid Mattress

• Hybrid design with foam + up to 961 individually encased coild
• 13" profile with added responsiveness and durability
• Stronger edge support and more overall stability
• Ideal for sleepers who want ultra-firm support with a more substantial feel
• RV sizes available for firm comfort on the road

Which should you choose?

Plank Firm if you want:

• a lower-profile
• ultra-firm foam mattress with zero sink

Plank Firm Luxe if you want:

• maximum support
• added responsiveness
• edge strength / edge support
• and RV size options

Shop Plank Ultra-Firm

10" Foam Mattress

Shop Plank Firm Luxe

13" Hybrid Mattress