Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 72x80 · list priceSee price
Heartland Sundance 3310MKS mattress size
Main bed72 × 80 inRV king
That's an RV king, 4 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 72 × 80 in.
About the RV king size →Heartland spec sheet, 2015.
Mattresses in 72 × 80 in
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Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$799RV King - 72x80 · list priceSee price
Firm
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,532RV King - 72x80 · list priceSee price
Cooling
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$2,465RV King - 72x80 · list priceSee price
Heavy duty
RVMattress.comTitan Plus Luxe
- Hybrid
- 13 in thick
- Plush
$1,865RV King - 72x80 · list priceSee price
Helix pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,489RV King · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King 72x80 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 72 × 80 inGet a quote
The Sundance bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2015 | 70 × 80 in King | – | – | recreationalvehicles.info |
| 2015 | 72 × 80 in Queen | – | – | Heartland spec sheet |
Years not listed weren't published.
The 3310MKS floorplan
Heartland's 2015 3310MKS floorplan.
Is this your 3310MKS?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2014 | Sundance XLT 3310MKS | 37' 3" | – |
| 2015 | Sundance 3310MKS | 37' 3" | 5-6 |
Other Sundance mattress sizes
Sources
- Heartland (heartlandrvs.com), archived copy: https://web.archive.org/web/20160715121833/http://www.heartlandrvs.com:80/brands/fifthwheels/sundance/sd-3310-mks
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2021/02/2014F-SD_SDXLT_Brochure-web.pdf
Questions
What size mattress is in the Heartland Sundance 3310MKS?
The main bed is 72 × 80 in (Heartland spec sheet, 2015).