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Clearance Mattresses - NM® HD+™ Core Mattress Collection — High‑Density Foam, Zoned Lumbar & Edge Support
Meet NM® HD+™ Core—mattresses built around high‑density foam... Read More
Meet NM® HD+™ Core—mattresses built around high‑density foam for durable support, low motion transfer for quieter nights, zoned lumbar for alignment, and reinforced edges for full‑width comfort. Available in firm, medium, and plush feels across Twin, Twin XL, Full/Double, Queen, and King.
Get exclusive deals on last year's models, limited quantities, factory clearance, samples, floor models, and more exclusively at National Mattress Outlet Plus+. Don’t wait too long as these last-minute deals won’t last long. Our clearance mattresses are priced to clear fast. Please note that some models may have some sort of visual defect so please read the product description or inquire in-store if you have any further questions. Shop our clearance section of products on sale available in-store and online. Enquire in-store for even more items on clearance.
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The NM® HD+™ Core Mattress Collection focuses on stability, alignment, and everyday durability. By pairing high‑density support foams with targeted zoning and perimeter reinforcement, these models deliver a balanced feel that stays consistent—night after night.
What defines the HD+™ Core collection
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High‑Density Foam Core
Robust base foams provide long‑wear support and shape retention for a steady, lifted feel. -
Low Motion Transfer
All‑foam foundations and tuned transition layers help limit partner disturbance. -
Zoned Lumbar Support
Center‑third/lumbar zoning or integrated pads add lift under the hips to encourage neutral spinal alignment. -
Edge Support
High‑density perimeter rails or reinforced borders create a stable sitting edge and more usable sleep surface. -
Comfort Options
Pressure‑relieving tops (memory‑foam, responsive foam, or quilted comfort) in multiple firmness profiles.
Who it’s for
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Couples who want a quiet, low‑motion bed with strong edges.
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Back & stomach sleepers seeking steady mid‑section support.
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Side sleepers who prefer plush tops over a supportive core.
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Value‑minded shoppers prioritizing durability and alignment.
How to choose (quick tips)
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Firmness by position: Side = medium to medium‑plush; Back = medium; Stomach = medium‑firm to firm.
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Height & feel: 10–14″ builds add transitional layers for smoother pressure relief.
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Temperature: Prefer a cooler feel? Look for open‑cell foams, gel/graphite infusions, and breathable covers.
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Base compatibility: Works with platform/slatted frames and most adjustable bases (confirm model specifics).
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Care: Rotate head‑to‑toe regularly to help maintain an even surface.
What you’ll find here
A curated range of all‑foam (foam‑core) NM® HD+™ mattresses featuring high‑density cores, low motion transfer, zoned lumbar systems, and edge reinforcement—in Twin, Twin XL, Full/Double, Queen, and King.
Features vary by model. Guidance is general and not medical advice.
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