FORM Core vs The Purple Mattress
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 2026-10-08.
FORM Core vs The Purple Mattress: full spec table
| Spec | FORM Core | The Purple Mattress |
|---|---|---|
| Type | Foam | Foam |
| Firmness | 6/10 | 6/10 |
| Height | 9" | 9.25" |
| Queen price | $1,349 | $1,299 |
| Price range (all sizes) | $1,099–$1,849 | $799–$1,899 |
| Foam densities (lb/ft³, top → bottom) | 1.7 / 1.6 | 1.8 / 2.0 |
| Coil gauge | — | — |
| Coil count (queen) | — | — |
| Cooling | 6/10 | 6/10 |
| Motion isolation | 7/10 | 7/10 |
| Edge support | 5/10 | 5/10 |
| Pressure relief | 7/10 | 8/10 |
| Support | 6/10 | 6/10 |
| Natural materials | 3/10 | 3/10 |
| Notable features | GelGrid pressure-relief surface, Purple-style gel grid over foam, Medium-firm supportive feel, Launched 2026 by FORM | GelFlex Grid comfort layer, Temperature-neutral grid, Responsive pressure relief |
| Spec source | NapLab | Sleep Foundation |
Key differences
- On the published specs these two are close substitutes — similar firmness, price, and construction. Decide on current price, trial length, and returns policy.
Who the FORM Core is for
The FORM Core has a medium feel that works for many side and back sleepers, and for combination sleepers who switch positions.
Who the The Purple Mattress is for
The The Purple Mattress 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
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Frequently asked questions
Which is firmer, the FORM Core or the The Purple Mattress?
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 FORM Core or the The Purple Mattress?
The The Purple Mattress is cheaper in a queen: $1,299 versus $1,349, as of 2026-10-08.
What is the main construction difference between the FORM Core and the The Purple Mattress?
Both are foam builds with similar published specs — the differences come down to feel and price rather than construction. The full layer-by-layer comparison is 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 FORM Core and the The Purple Mattress.