Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,332Short Queen - 60x74 · 1 in shorter than your platformSee price
KZ Sportster 355TH12 mattress size
Main bed60 × 75 inRV short queen
That's an RV short queen, 5 in shorter than a regular queen. A regular queen would hang off the end, so get an RV short queen.
About the RV short queen size →KZ spec sheet, 2016.
Bunks60 × 85 in / 44 × 59 in
Bunk. KZ spec sheet, 2016.
Common RV bunk sizes →
Mattresses in 60 × 75 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$524Short Queen - 60x74 · 1 in shorter than your platformSee price
Firm
RVMattress.comPlank Firm Luxe
- Hybrid
- 13 in thick
- Firm / Extra Firm
$1,598Short Queen - 60x74 · 1 in shorter than your platformSee price
Cooling
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$1,865Short Queen - 60x74 · 1 in shorter than your platformSee price
Heavy duty
Brooklyn BeddingTitan Plus Luxe
- Hybrid
- 13 in thick
- Plush
$1,665Short Queen - 60x75 · list priceSee price
Helix pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,183Short Queen (60 × 74) · 1 in shorter than your platformSee price
Natural latex
PlushBedsEco Green Organic Latex
- Latex
- 8 in thick
$1,175Queen Short · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$799Short Queen - 60x74 · 1 in shorter than your platformSee price
Bunk mattresses in 60 × 85 in / 44 × 59 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
Made to 60 × 85 inGet a quote
The Sportster bedroom. Measure the platform, not the old mattress, before you buy.
The 355TH12 floorplan
KZ's 2016 355TH12 floorplan.
Is this your 355TH12?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2015 | Sportsmen Sportster 355TH12 | 39' 11" | – |
| 2016 | Sportsmen Sportster 355TH12 | 39' 11" | – |
Other Sportster mattress sizes
Sources
Questions
What size mattress is in the KZ Sportster 355TH12?
The main bed is 60 × 75 in (KZ spec sheet, 2016).
Will a regular queen mattress fit the KZ Sportster 355TH12?
No. The platform is 60 × 75 in, an RV short queen. A home queen is 60 × 80 in and hangs off the end.
What size are the KZ Sportster 355TH12 bunk mattresses?
60 × 85 in / 44 × 59 in (KZ spec sheet, 2016).