Custom size
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 68 × 76 inGet a quote
That isn't a standard mattress size, so order a custom size cut to your platform.
Keystone spec page, 2027.
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Sleep Foundation: Best Mattress for Pressure Relief Read review

The Raptor bedroom. Measure the platform, not the old mattress, before you buy.

Keystone's 2027 444 floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2026 | Raptor 444 | 46 ft 1 in | 7 |
| 2027 | Raptor 444 | 46 ft 0 in | 7 |
The main bed is 68 × 76 in (Keystone spec page, 2027).