KZ Sportster 290THR mattress size
Years 2019Sold as SportsterLength 31' 11"
Bunk mattresses in 32 × 70 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Custom size

Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
The 290THR floorplan

KZ's 2019 290THR floorplan.
Is this your 290THR?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
| 2019 | Sportster 290THR | 31' 11" | – |
Other Sportster mattress sizes
Questions
What size are the KZ Sportster 290THR bunk mattresses?
32 × 70 in (KZ spec sheet, 2019).