- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
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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 →2022 Forest River Arctic Wolf brochure, 2022.
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Sleep Foundation: Best Mattress Overall Read review
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Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
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| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2021 | 72 × 80 in King | 48 × 72 in | – | 2021 Forest River Arctic Wolf brochure |
| 2022 | 72 × 80 in King | 48 × 72 in | – | 2022 Forest River Arctic Wolf brochure |
Years not listed weren't published.

Forest River's 2021 3880SUITE floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2021 | Cherokee Arctic Wolf 3880SUITE | 43' 2" | – |
| 2022 | Cherokee Arctic Wolf 3880SUITE | 43' 2" | – |
The main bed is 72 × 80 in (2022 Forest River Arctic Wolf brochure, 2022).
48 × 72 in (2022 Forest River Arctic Wolf brochure, 2022).