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1 / 1Images: Siena. Shown size and configuration may vary.
Signature 12″ Hybrid
Best for: Hybrid with extra comfort foam
A 12″ wrapped-coil hybrid with 1″ memory foam and 2″ comfort foam.
Good to know: Split King is listed per half (38″ × 80″).
- Type
- Hybrid
- Height
- 12″
- Sizes
- 6 ready-made
- Certified
- CertiPUR-US
38 × 75 in · 12″ tall
Where to get it
- sienasleep.comQueen $429 · checked Oct 16 See price
- Split kingSplit King See the list
Returns: 180 nights from delivery; an opened mattress can be returned no earlier than 30 days after delivery Details
We may earn a commission if you buy. Check the price for your exact size and height on the seller’s site.
The short version
Worth a look if
- Hybrid with extra comfort foam
Good
- A 12″ wrapped-coil hybrid with 1″ memory foam and 2″ comfort foam.
- Trial: 180 nights from delivery; an opened mattress can be returned no earlier than 30 days after delivery
- Height: 12″
- Sizes: Twin, Twin XL, Full, Queen, King, Cal King, Split King
Think about
- Split King is listed per half (38″ × 80″).
- No owner reviews we could verify yet
- Standard sizes only: no RV, odd or custom sizes listed
Based on the maker’s published specs and terms, and the owner reviews linked below. We haven’t slept on it. Something wrong? Tell us.
What owners say
No owner reviews we can verify yet A small set of real reviews, each linked to its source. Not a star rating.
Owner feedback was not researched in this pass.
What people liked
No supported praise summary in the sample.
What to weigh up
No substantive concern verified in this small sample. This is a gap in the evidence, not proof of no drawbacks.
Sources & sample limits
No owner sources reviewed for this model. Sample: 0 owner reports.
Spec-and-size pass only; owner feedback (Reddit, forums) still to be gathered.
Research checked October 14, 2026. These are sourced observations, not our own product tests or a star rating.
Every size it comes in
Twin38 × 75 in12″Twin XL38 × 80 in12″Full · 54-inch54 × 75 in12″Queen60 × 80 in12″King76 × 80 in12″California king72 × 84 in12″
Taken from the maker’s size options, in the inches it publishes. Tap a size to compare every mattress made in it.
Price for every size
From the maker’s site on Oct 24, 2026. Prices change often, so check before you buy.
How it compares
Beside the most similar mattresses from other brands.
| Signature 12″ HybridSiena | Black Hybrid 12″ (Medium Plush / Firm)EGOHOME | Black Hybrid 12″ (Medium Firm)EGOHOME | Tenzura Hybrid 12″EGOHOME | |
|---|---|---|---|---|
| Type | Hybrid | Hybrid | Hybrid | Hybrid |
| Queen price | $429 | $479 | $479 | $569 |
| Height | 12″ | 12″ | 12″ | 12″ |
| Trial | 180 nights | 100 nights | 100 nights | 100 nights |
| Odd sizes | None | None | None | None |
| Expert reviews | None yet | None yet | 1 | None yet |
What’s inside
- 11″ memory foam
- 22″ comfort foam
- 3Individually wrapped coils
- Feel
- Not published
- Height
- 12″
- Custom sizes
- Not offered for this model
Returns and ordering
Trial and returns
180 nights from delivery; an opened mattress can be returned no earlier than 30 days after delivery
Before you order
- Measure inside the frame, not the old mattress
- Check clearance above for the height you pick
- Make sure your base supports it
- Buy sheets in the same exact size
Questions
What is it made of?
Individually wrapped coils with 1″ memory foam and 2″ extra comfort foam.
How firm is it?
Not published That’s the maker’s description; we haven’t measured it.
Which sizes and heights can I get?
6 sizes, 12″. See every size. Confirm your exact size and height with the seller.
Are the reviews about this exact mattress?
No owner reviews we can verify yet. Spec-and-size pass only; owner feedback (Reddit, forums) still to be gathered.
Where did this information come from?
Checked 2026-10-16. Specs and terms can change.
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