Plank Firm Luxe Hybrid Mattress (With Cooling Cover)
The Plank Firm Luxe is Brooklyn Bedding's 13 in flippable ultra-firm hybrid, with a quilted extra-firm sleep surface on one side, a firm quilted surface on the other, and up to 961 individually encased Ascension Firm coils in between. SleepCity's version includes the GlacioTex cooling cover on every size except Twin, making it a cool-sleeping choice for back and stomach sleepers who want orthopedic-style firmness.
- Flip between the firm and extra-firm sides to fine-tune ultra-firm support for your back and stomach sleeping.
- Up to 961 individually encased Ascension Firm coils stabilize the core, limit motion transfer, and reinforce the edges.
- A GlacioTex cooling cover, included on every SleepCity size except Twin, keeps the firm sleep surface cool to the touch.
- Mattress height
- 13 in
- Sleep type
- Back and stomach sleepers; Sleepers with back pain who want extra-firm support
- Mattress type
- Hybrid Mattress
- Comfort feel
- Extra Firm
Firmness Scale
9.0
- 1–3 Plush
- 3–4 Medium Plush
- 4–6 Medium
- 6–8 Medium Firm
- 8–9 Firm
- 9–10 Extra Firm
Under Bed Solutions
Top of Bed Solutions
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Certifications
Certifications
Certification details vary by brand and model. A SleepCity expert can help confirm materials, foams, and manufacturer-backed claims for this exact product before you purchase.
Delivery & Returns
Delivery & Returns
SleepCity serves Southeast Texas and Southwest Louisiana with local delivery on selected mattress purchases. We will confirm timing, setup options, pickup availability, and return details before checkout.
Warranty
Warranty
Warranty coverage is provided by the manufacturer and varies by product. SleepCity can help compare coverage, confirm what is included, and point you to the right registration details.
Why SleepCity?
Why SleepCity?
SleepCity pairs trusted mattress brands with local showroom guidance, financing help, and delivery support, so the experience stays clear from selection through setup.

Inside the Plank Firm Luxe Hybrid
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Flip between firm and extra-firm comfort to find your preferred balance of cushioning and a supportive, minimal-sink feel.
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Steady support. Less partner disturbance.
Individually encased coils provide a stable foundation for either sleep surface and help limit motion transfer when a partner moves. -
Cooling cover: check your size
The diagram labels GlacioTex as optional. SleepCity includes this cool-to-the-touch cover on every available size except Twin; Twin does not include the cooling cover.
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Why shop at SleepCity
Local Delivery
Delivery and setup options for Southeast Texas and Southwest Louisiana.
Comfort Guidance
Help before and after purchase so the fit feels right at home.
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Real showroom support from a team that knows the region.
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Clear offer comparisons and shopper-first guidance.