Quick verdict: Choose the Plank Firm if you want a very firm all-foam mattress. Consider the Firm Luxe if you prefer a firm, flippable hybrid with individually encased coils and a little more contouring. Both offer firm and extra-firm sides, so neither is a typical plush mattress.
Plank is a Brooklyn Bedding brand. This comparison uses the manufacturer’s published details and buying considerations; it does not claim a new controlled test of the current models. Yawnder sells mattresses and may earn a commission from qualifying links.
The complete Plank mattress lineup
Plank currently lists five models. This article compares Firm and Firm Luxe in detail; the three newer models below are described using the manufacturer’s published specifications. Contact our Encinitas showroom to check Yawnder availability and pricing.
- Plank Firm: A flippable all-foam mattress with firm and extra-firm sides.
- Plank Firm Luxe (Plank Luxe Hybrid): A flippable hybrid with foam and individually encased coils.
- Plank Essential: An extra-firm hybrid with foam and individually encased coils; Plank positions it as its value model. View manufacturer details.
- Plank Luxe Zoned: A flippable firm and extra-firm hybrid with zoned foam and individually encased coils. View manufacturer details.
- Plank Firm Rx: A firm hybrid with memory foam, microcoils and individually encased support coils. View manufacturer details.
These descriptions of Essential, Luxe Zoned and Firm Rx are based on manufacturer information, not hands-on testing. An optional GlacioTex cooling cover is listed for each; compare the exact size, options and seller terms before buying.
| Feature |  Plank Firm |
 Plank Firm Luxe |
|---|---|---|
| Construction | All-foam support core and comfort layers | Foam layers with a six-inch individually encased coil core |
| Sleep surfaces | Flippable: firm and extra-firm | Flippable: firm and extra-firm |
| Feel | Very firm, lower-profile foam construction | Firm hybrid with more conforming foam and coil response |
| Cooling upgrade | Optional GlacioTex cover | Optional GlacioTex cover |
| Height | Manufacturer pages list roughly 10–11 inches | Manufacturer pages list roughly 12–13.25 inches |
Plank’s comparison guide and its product listings give different height figures. Check the specification for the exact version and size with your seller, especially if sheet pocket depth or bed height matters.
Construction and feel
The Firm has an all-foam core; the Firm Luxe combines foam with individually encased coils. Both are designed to be flipped to change between their firm and extra-firm surfaces. The hybrid may feel more responsive, while the all-foam model has no spring unit. Firmness and the amount of contouring you notice depend on your body size and position.
Plank’s comparison guide rates the all-foam Firm’s two sides about 8 and 10 out of 10 and the Luxe sides about 7 and 9–9.5. Its Luxe product FAQ uses different ranges. These are manufacturer ratings, not Yawnder head-to-head scores, and should be treated as a starting point rather than a universal measurement.
Who should consider each mattress?
Back and stomach sleepers: Either model may be worth trying if you strongly prefer a firm, flatter surface. Check that the bed supports your midsection without causing uncomfortable pressure. The Luxe’s coil-and-foam construction offers a different response from the Firm’s all-foam core.
Side sleepers: Very firm beds can feel uncomfortable at the shoulders or hips. Try the firm side first and compare a more cushioned mattress if pressure remains. A topper can change the feel, but ask whether it affects your intended setup and return policy.
Couples: Both partners should try the bed and change positions while the other lies still. Sit and lie near the edge. Edge support and movement transfer can vary with the person and configuration; we do not assign a comparative test score here.
Cooling cover and setup
Both models offer an optional GlacioTex cover intended to feel cool to the touch. The Luxe’s coils can allow airflow through the support core, but neither design guarantees a cooler night. Sheets, protectors, the room and personal preference affect temperature.
Confirm the required foundation, slat spacing, center support and combined weight capacity for the exact mattress and frame. Check manufacturer instructions before flipping either mattress; two-sided beds can be heavy, so get help if needed and keep the mattress away from obstacles.
Price, trial and where to buy
Compare the same size and whether the optional cover is included. Promotions vary, so the old fixed-price table is not a reliable current quote. Include tax, delivery, setup, old-mattress removal and any compatible foundation or base in the final total.
Plank’s direct return guide describes a 365-night mattress trial with a 30-night minimum and exceptions. The Plank Firm product page also displays a 120-night trial and a $99 return fee, so confirm the current direct terms for your particular model. For eligible Yawnder purchases, the trial is 100 nights with a 30-night adjustment period; returns for a refund have a $200 processing fee, waived for an eligible exchange. Exclusions apply. Policies depend on the seller and purchase date.
Shop Plank mattresses at Yawnder or contact the Encinitas showroom to confirm current models and floor availability.
Frequently asked questions
Can I flip both mattresses?
Yes. Both are designed with firm and extra-firm sleep surfaces. Follow the manufacturer’s care instructions for flipping and rotation.
Is Firm Luxe always softer?
It uses a different construction and the manufacturer describes its firm side as more conforming, but your experience will depend on the side you use and how your body interacts with the mattress. Try the exact models if you can.
Does a cooling cover lower the room temperature?
No. The optional cover is a passive material designed to feel cool to the touch; it is not powered climate control.
What is the exact height?
Plank’s own pages currently disagree about the height of each model. Verify the seller’s specifications for the exact mattress before buying fitted sheets or a frame.
Considering a more cushioned heavy-duty hybrid? Read our Plank Firm Luxe vs Titan Plus Luxe comparison.
Compare both beds against 142 tested mattresses
Sort all 142 mattresses we have tested by pressure relief, support, cooling, motion isolation, edge support, price, trial and warranty, then filter by how you actually sleep. Of those, 84 hold a complete standardized record and 41 a partial standardized record.