Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 70x80 · list priceSee price
Heartland Milestone 370FLMB mattress size
Main bed70 × 80 inRV king
That's an RV king, 6 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 70 × 80 in.
About the RV king size →Heartland spec sheet, 2022.
Mattresses in 70 × 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
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$799RV King - 70x80 · list priceSee price
Firm
RVMattress.comPlank Firm Luxe
- Hybrid
- 13 in thick
- Firm / Extra Firm
$1,865RV King - 70x80 · 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 - 70x80 · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King - 70x80 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 70 × 80 inGet a quote
The Milestone bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2019 | 70 × 80 in King | – | – | recreationalvehicles.info |
| 2021 | 70 × 80 in King | – | – | recreationalvehicles.info |
| 2022 | 70 × 80 in King | – | – | recreationalvehicles.info |
| 2022 | 70 × 80 in King | – | – | Heartland spec sheet |
Years not listed weren't published.
The 370FLMB floorplan
Heartland's 2020 370FLMB floorplan.
Is this your 370FLMB?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2019 | Milestone 370FLMB | 43'-1" | 7-8 |
| 2020 | Milestone 370FLMB | 43'-1" | 7-8 |
| 2021 | Milestone 370FLMB | 44'7" | – |
| 2022 | Milestone 370FLMB | 44'7" | 7-8 |
| 2023 | Milestone 370FLMB | 44'2" | 7 - 8 |
| 2024 | Milestone 370FLMB | 44'2" | 7 - 8 |
Other Milestone mattress sizes
Sources
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2024/01/2024-HRV-MI-4P-Brochure-Web.pdf
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2022/12/MI-4P-BROCHURE-lowres-1.pdf
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2022/03/2022-MS-Literature.pdf
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2021/03/Heartland_Brochure_MI_4P-3-29.pdf
- Heartland (heartlandrvs.com), archived copy: https://web.archive.org/web/20200928002942/https://heartlandrvs.com/2020/fifth-wheel/milestone/milestone-370flmb/
- Heartland (heartlandrvs.com), archived copy: https://web.archive.org/web/20191014212054/https://heartlandrvs.com/2019/fifth-wheel/milestone/milestone-370flmb/
Questions
What size mattress is in the Heartland Milestone 370FLMB?
The main bed is 70 × 80 in (Heartland spec sheet, 2022).