- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
That's the same size as a regular queen, so any standard queen mattress fits.
About the RV queen size →Dealer report, 2022. A reported size, not a guarantee: measure your platform first.
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Sleep Foundation: Best Mattress Overall Read review
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The Fuzion bedroom. Measure the platform, not the old mattress, before you buy.
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2018 | 60 × 80 in Queen | – | – | recreationalvehicles.info |
| 2021 | 60 × 80 in Queen | – | – | recreationalvehicles.info |
| 2022 | 60 × 80 in Queen | – | – | Dealer report |
Years not listed weren't published.

Keystone's 2023 357 floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2021 | Fuzion 357 | 39 ft 0 in | 8 |
| 2022 | Fuzion 357 | 39 ft 0 in | 8 |
| 2023 | Fuzion 357 | 39 ft 0 in | 8 |
| 2024 | Fuzion 357 | – | 8 |
The main bed is 60 × 80 in (Dealer report, 2022).