- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
That's an RV king, 4 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 72 × 80 in.
About the RV king size →Jayco floorplan drawing, 2025.
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Sleep Foundation: Best Mattress Overall Read review
Sleep Foundation: Best Mattress for Temperature Regulation Read review
Mattress Clarity: Best RV Mattress for Heavy People Read review
Sleep Foundation: Best Mattress for Side Sleepers Read review
Sleep Foundation: Best Mattress for Pressure Relief Read review

The Pinnacle bedroom. Measure the platform, not the old mattress, before you buy.
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2023 | 72 × 80 in King | – | – | Jayco floorplan drawing |
| 2024 | 72 × 80 in King | – | – | Jayco floorplan drawing |
| 2025 | 72 × 80 in King | – | – | Jayco floorplan drawing |
Years not listed weren't published.

Jayco's 2025 38FLGS floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2021 | Pinnacle 38FLGS | 44' 5" | 5-6 |
| 2022 | Pinnacle 38FLGS | 44' 4" | 4-6 |
| 2023 | Pinnacle 38FLGS | 44' 5" | 6 |
| 2024 | Pinnacle 38FLGS | 44' 5" | 6 |
| 2025 | Pinnacle 38FLGS | 44' 5" | 6 |
The main bed is 72 × 80 in (Jayco floorplan drawing, 2025).