# Latex Mattress Factory Luxerion (Firm) vs Plank Firm (Firm): Firmness, Price, and Construction Compared

Canonical: https://squishmat.com/compare/latex-mattress-factory-luxerion-firm-vs-plank-firm-firm · Data refreshed 2026-10-06 · Source: SquishMat

The Plank Firm (Firm) is $167 cheaper in a queen; the table below shows what the price gap buys.

## Full spec table

| Spec | Latex Mattress Factory Luxerion (Firm) | Plank Firm (Firm) |
| --- | --- | --- |
| Type | Foam | Foam |
| Firmness | 8/10 | 8/10 |
| Height | 10" | 10.5" |
| Queen price | $1,499 | $1,332 |
| Price range (all sizes) | $1,149–$1,799 | $749–$1,532 |
| Foam densities (lb/ft³, top → bottom) | 4.5 / 4.5 / 4.5 | 1.5 / 2.5 / 1.8 / 1.5 |
| Coil gauge | — | — |
| Coil count (queen) | — | — |
| Cooling | 7/10 | 5/10 |
| Motion isolation | 6/10 | 7/10 |
| Edge support | 6/10 | 5/10 |
| Pressure relief | 8/10 | 8/10 |
| Support | 8/10 | 6/10 |
| Natural materials | 9/10 | 2/10 |
| Notable features | Three 3" GOLS organic Dunlop latex layers (Arpico/Lalan), Published ILD per layer position, Organic cotton cover quilted to 1" Joma wool, Zippered cover for layer access | Flippable firm and extra-firm sides, Flat, ultra-firm support surface, Spinal-alignment focus for stomach sleepers, Optional cooling cover |
| Spec source | Manufacturer | NapLab |

## Key differences

- The Plank Firm (Firm) is $167 cheaper in a queen ($1,332 vs $1,499 as of 2026-10-06) than the Latex Mattress Factory Luxerion (Firm).
- The Latex Mattress Factory Luxerion (Firm) uses denser foam (lowest layer 4.5 vs 1.5 lb/ft³) — density is the best single predictor of how long foam lasts before it sags.
- The Latex Mattress Factory Luxerion (Firm) scores notably better for sleeping cool (7/10 vs 5/10).

## Who each mattress is for

**Latex Mattress Factory Luxerion (Firm):** The Latex Mattress Factory Luxerion (Firm) has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted. Strengths: Excellent pressure relief at the shoulders and hips; Strong, even support that keeps the spine aligned; Built largely from natural materials like latex, wool, or cotton.

**Plank Firm (Firm):** The Plank Firm (Firm) has a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted. Strengths: Excellent pressure relief at the shoulders and hips.

## FAQ

### Which is firmer, the Latex Mattress Factory Luxerion (Firm) or the Plank Firm (Firm)?

They rate the same: both are a 8/10 on the firmness scale, a firm feel suited to stomach sleepers and heavier sleepers who need to keep their hips lifted.

### Which is cheaper, the Latex Mattress Factory Luxerion (Firm) or the Plank Firm (Firm)?

The Plank Firm (Firm) is cheaper in a queen: $1,332 versus $1,499, as of 2026-10-06.

### What is the main construction difference between the Latex Mattress Factory Luxerion (Firm) and the Plank Firm (Firm)?

Both are foam builds, but the Latex Mattress Factory Luxerion (Firm) uses meaningfully denser foam, which generally predicts better durability. Full per-layer densities are in the table above.

## More

- [Latex Mattress Factory Luxerion (Firm) — full specs](https://squishmat.com/mattresses/latex-mattress-factory-luxerion-firm)
- [Plank Firm (Firm) — full specs](https://squishmat.com/mattresses/plank-firm-firm)
- [Comparison matrix: every mattress we track](https://squishmat.com/compare)

Free to cite with attribution — link to the canonical page. Where a datapoint traces to a third-party teardown, please credit the original measurer too (sources are cited per bed on https://squishmat.com/mattress-database).