# DLX Classic (Medium) vs Glacier Summit: Firmness, Price, and Construction Compared

Canonical: https://squishmat.com/compare/dlx-classic-medium-vs-glacier-summit · Data refreshed 2026-09-04 · Source: SquishMat

These two are close substitutes on paper — the spec table below shows where they differ.

## Full spec table

| Spec | DLX Classic (Medium) | Glacier Summit |
| --- | --- | --- |
| Type | Hybrid | Hybrid |
| Firmness | 6/10 | 6/10 |
| Height | 12.5" | 13" |
| Queen price | $1,000 | $959 |
| Price range (all sizes) | $700–$1,300 | $639–$1,199 |
| Foam densities (lb/ft³, top → bottom) | 1.8 / 1.8 / 1.8 / 1.8 | 1.8 / 2.5 / 1.8 |
| Coil gauge | 13.75 | 15 |
| Coil count (queen) | — | — |
| Cooling | 7/10 | 6/10 |
| Motion isolation | 6/10 | 6/10 |
| Edge support | 8/10 | 7/10 |
| Pressure relief | 6/10 | 9/10 |
| Support | 9/10 | 8/10 |
| Natural materials | 4/10 | 3/10 |
| Notable features | Two-sided flippable build, Different firmness on each side, 13.75-gauge pocketed coils, Old-school durable construction | Mid-tier cooling hybrid, 2" memory foam comfort layer, glacierTech Elite cover, Six-layer cooling design |
| Spec source | NapLab | NapLab |

## Key differences

- The DLX Classic (Medium) runs thicker support coils (13.75-gauge vs 15-gauge — lower gauge means thicker, firmer wire).

## Who each mattress is for

**DLX Classic (Medium):** The DLX Classic (Medium) has a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions. Strengths: Strong, even support that keeps the spine aligned; Sturdy edges that make the full surface usable.

**Glacier Summit:** The Glacier Summit has a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions. Strengths: Excellent pressure relief at the shoulders and hips; Strong, even support that keeps the spine aligned.

## FAQ

### Which is firmer, the DLX Classic (Medium) or the Glacier Summit?

They rate the same: both are a 6/10 on the firmness scale, a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions.

### Which is cheaper, the DLX Classic (Medium) or the Glacier Summit?

The Glacier Summit is cheaper in a queen: $959 versus $1,000, as of 2026-09-04.

### What is the main construction difference between the DLX Classic (Medium) and the Glacier Summit?

Both are hybrid builds; the biggest spec difference is the support core — the DLX Classic (Medium) uses thicker coils. Full specs are in the table above.

## More

- [DLX Classic (Medium) — full specs](https://squishmat.com/mattresses/dlx-classic-medium)
- [Glacier Summit — full specs](https://squishmat.com/mattresses/glacier-summit)
- [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).