ThermoBalance LX (Medium) vs Leesa Reserve
These two are close substitutes on paper — the spec table below shows where they differ. Every number below comes from published teardowns and spec sheets (see our methodology); prices are queen-size, refreshed 2026-10-06.
ThermoBalance LX (Medium) vs Leesa Reserve: full spec table
| Spec | ThermoBalance LX (Medium) | Leesa Reserve |
|---|---|---|
| Type | Hybrid | Hybrid |
| Firmness | 6/10 | 6/10 |
| Height | 14" | 14" |
| Queen price | $2,532 | $2,589 |
| Price range (all sizes) | $1,832–$3,199 | $1,679–$2,589 |
| Foam densities (lb/ft³, top → bottom) | 1.5 / 5.6 / 2.5 / 1.8 / 1.6 | 4.0 / 5.0 / 2.5 / 1.8 / 1.8 |
| Coil gauge | 14.5 | 13.5 |
| Coil count (queen) | — | — |
| Cooling | 6/10 | 5/10 |
| Motion isolation | 6/10 | 7/10 |
| Edge support | 7/10 | 8/10 |
| Pressure relief | 8/10 | 9/10 |
| Support | 8/10 | 8/10 |
| Natural materials | 4/10 | 4/10 |
| Notable features | Talalay latex + memory foam hybrid, Aerated latex cooling layer, Zoned pocketed coil core, Medium responsive feel | Luxury triple memory foam comfort, 5 PCF premium memory foam, Zoned pocketed coil core, Deep-contour plush feel |
| Spec source | NapLab | NapLab |
Key differences
- The Leesa Reserve runs thicker support coils (13.5-gauge vs 14.5-gauge — lower gauge means thicker, firmer wire).
Who the ThermoBalance LX (Medium) is for
The ThermoBalance LX (Medium) has a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions.
- Excellent pressure relief at the shoulders and hips
- Strong, even support that keeps the spine aligned
Who the Leesa Reserve is for
The Leesa Reserve has a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions.
- Excellent pressure relief at the shoulders and hips
- Strong, even support that keeps the spine aligned
- Sturdy edges that make the full surface usable
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Frequently asked questions
Which is firmer, the ThermoBalance LX (Medium) or the Leesa Reserve?
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 ThermoBalance LX (Medium) or the Leesa Reserve?
The ThermoBalance LX (Medium) is cheaper in a queen: $2,532 versus $2,589, as of 2026-10-06.
What is the main construction difference between the ThermoBalance LX (Medium) and the Leesa Reserve?
Both are hybrid builds; the biggest spec difference is the support core — the Leesa Reserve uses thicker coils. Full specs are in the table above.
See how both stack up against every bed we track in the full comparison matrix, or dig into the complete specs for the ThermoBalance LX (Medium) and the Leesa Reserve.