The Plank Firm by Brooklyn Bedding is an all-foam mattress—and the firmest sleep experience on the market. (Next level firmness could only be achieved by eliminating the mattress altogether and sleeping directly on the floor.) Meanwhile, the Plank Firm Luxe by Brooklyn Bedding is constructed with added foam layers and individually encased coils to deliver greater pressure point relief and responsiveness. Both mattresses are flippable, which allows you to choose between a firm and extra-firm side. Many customers with a sleep partner do opt for the Plank Firm Luxe to ensure a more comfortable sleep experience for both individuals.

On a scale of 1 to 10, the firm side of the Plank Firm mattress ranges between 7.5-9. This ranking is slightly above a traditional firm mattress. The ultra-firm side ranges between 9.5-10.5—meaning it’s the firmest, flattest sleep surface on the market. To put that in perspective, next level firmness could only be achieved by sleeping directly on the floor with no pressure point relief.

On a scale of 1 to 10, the firm side of the Plank Luxe mattress ranges between 6.5-8. This ranking is deemed a traditional firm mattress. The ultra-firm side ranges between 8-9.5—meaning it’s one of the firmest, flattest sleep surfaces on the market but features more contouring than the original Plank version.

Any type of support system that provides minimal to no flex will work with our mattress. This includes most platform, slat, and box spring foundations. If you need a foundation for your new mattress, check out our foundations specifically designed for Brooklyn Bedding mattresses here.

Brooklyn Bedding mattresses are designed to be used on foundations with solid support with minimal to no flex. This includes slatted wood or metal foundations with slats no more than 4" apart, wood or metal box foundations, and solid wood or metal platforms.

The Plank Firm features a breathable quilted top on either side of the mattress, coupled with open cell technology throughout the foam layers, to help ensure a neutral temperature environment.

For even greater temperature moderation, a cooling panel can be added to the Plank Firm mattress as an optional feature—just look for the “ADD GLACIOTEX™️ COOLING COVER” option on the right side of the product page when making your selection. Once you add this feature to your mattress, the GlacioTex™ Cooling Cover will be sewn into the surface of the mattress to moderate temperature while delivering ultimate cooling on contact.

We are confident we have made the best bedding products, so we back them with a generous trial period of 120 nights! We do require that you try your new mattress for at least 30 days from the date of delivery. This gives you ample time to properly adjust to the new materials. The trial date begins when you receive your mattress and can only be used once per customer per calendar year.