# SweetNight CoolNest vs. Siena Signature: Budget Foam Mattress Comparison

Canonical page: https://savlume.com/items/ggbnhyrzozir8spc8r9v6421l
Publisher: Savlume
Published on Savlume: 2026-10-11T18:49:19.016Z
Content updated: 2026-10-11T18:57:04.754Z
Source publication time: 2026-10-10T11:00:00.000Z
Offer status: Unverified

Tom’s Guide compared the 12-inch SweetNight CoolNest against the 10-inch Siena Signature to evaluate cooling and support for budget shoppers. Source testing indicated the medium-firm SweetNight provided superior hip and shoulder cushioning, making it the preferred choice for side sleepers at roughly $400 for a queen. Meanwhile, the firmer $329 Siena Signature better accommodated back and stomach sleepers while including an extended 180-night trial, though SweetNight regularly faces stock limitations in twin and California king sizes.

## Media review

The Tom's Guide comparison favors the SweetNight CoolNest for side sleepers, citing its medium-firm cushioning and cooling-focused design; it says the firmer Siena Signature is better suited to back and stomach sleepers.

Attribution: Tom’s Guide
AI-assisted summary of source text, not a Savlume hands-on test.

- Source-reported strength: The lead tester reports that the mattress cushioned shoulder and hip pressure points while side sleeping.
- Source-reported strength: The author reports a cool-to-the-touch cover and comfortable sleep during summer heat without air conditioning.
- Source-reported strength: The article reports that the mattress performed well in objective thermal-imaging tests.
- Source-reported limitation: The source says its 100-night sleep trial is shorter than Siena's 180-night trial.
- Source-reported limitation: The article reports twin and California king sizes unavailable at the time of writing.

### How does the mattress suit side sleepers?

The lead tester reports medium-firm support with cushioning at the shoulders and hips.

### What does the source report about temperature regulation?

The author reports that the cover felt cool to the touch and says the mattress performed well in thermal-regulation tests.

### What trial and warranty does the article report?

A 100-night sleep trial and a 10-year warranty.
## Evidence and sources

Source report only. Merchant price, availability, seller, and conditions have not been independently confirmed.
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Tom’s Guide: https://www.tomsguide.com/mattresses/sweetnight-vs-siena-which-budget-cooling-mattress-is-better-for-side-sleepers

AI-assisted summary of cited source material. Not a hands-on review. Prices and availability can change.