Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,465Queen · list priceSee price
Outdoors RV Creek Side 21MKS mattress size
Main bed60 × 80 inQueen
That's the same size as a regular queen, so any standard queen mattress fits.
About the RV queen size →Outdoors RV spec sheet, 2027.
Bunks48 × 74 in
Bunk. Outdoors RV spec sheet, 2027.
Common RV bunk sizes →
Mattresses in 60 × 80 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
Mattress InsiderThe Sedona
- All-foam
- 5.5 in thick
- Firm
$36160" x 80" · list priceSee price
Reviewers' favorite
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$1,999Queen · list priceSee price
Best memory foam
Mattress InsiderElation Gel Foam
- Memory foam
- 6 in thick
- cushion firm
$45960" x 80" · list priceSee price
Best hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$799Queen · list priceSee price
Best all-foam
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,332Queen · list priceSee price
Reviewer pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,183Queen · list priceSee price
Reviewer pick
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
$66960" x 80" · list priceSee price
Bunk mattresses in 48 × 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.
Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,332Short Full - 48x74 · list priceSee price
Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$492Short Full - 48x74 · list priceSee price
Reviewers' favorite
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$1,799Short Full - 48x74 · list priceSee price
Best hybrid
Mattress InsiderAdventure Max Hybrid
- Hybrid
- 10.5 in thick
- Firm / Medium
$91948" x 74" · list priceSee price
The 21MKS floorplan
Outdoors RV's 2027 21MKS floorplan.
Is this your 21MKS?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2024 | Creek Side 21MKS | 26'9" | – |
| 2027 | Creek Side 21MKS | 26'10" | – |
Other Creek Side mattress sizes
Sources
- Outdoors RV (outdoorsrvmfg.com): https://outdoorsrvmfg.com/wp-content/uploads/2026/10/ORV-Brochure-2027.pdf
- Outdoors RV (outdoorsrvmfg.com): https://outdoorsrvmfg.com/wp-content/uploads/2024/05/Mountain-Titanium-Brochure-2024.pdf
Questions
What size mattress is in the Outdoors RV Creek Side 21MKS?
The main bed is 60 × 80 in (Outdoors RV spec sheet, 2027).
What size are the Outdoors RV Creek Side 21MKS bunk mattresses?
48 × 74 in (Outdoors RV spec sheet, 2027).