Keystone Hideout 31BHDSWE mattress size
Years 2015–2017Sold as HideoutLength 34' 11"
Bunk mattresses in 28 × 74 in / 38 × 74 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.

Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review

RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
Best value

RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options

RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
The 31BHDSWE floorplan

Keystone's 2017 31BHDSWE floorplan.
Is this your 31BHDSWE?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
| 2015 | Hideout 31BHDSWE | – | – |
| 2016 | Hideout 31BHDSWE | 34' 11" | – |
| 2017 | Hideout 31BHDSWE | 34' 11" | – |
Other Hideout mattress sizes
Questions
What size are the Keystone Hideout 31BHDSWE bunk mattresses?
28 × 74 in / 38 × 74 in (Keystone spec sheet, 2017).