FlatCore Hybrid Support Mattress for Toyota Sienna

Designed for anyone who has ever woken up halfway down a tilted seat.

Sale price$599.00
1 Mattress ā‰ˆ 2–3 Hotel Nights Near A National Park

A vehicle-shaped support system evens out the long cabin floor for road trips, race weekends, and family overnights.

Shaped For Toyota Sienna
Levels The Long Cabin
Bridges Floor Transitions
Roomy Sleep Support
3-Year Warranty
60-Day Sleep Trial

Core Design Details

Key Features

Flat Surface. Full Space.

All the space you need. The Foam Pro levels your cargo floor flat.

Built-in Pump. 60 Seconds.

You handle the s'mores. Bed's ready in 60 seconds.

Air + Foam Provides Ultra Comfort.

Air-and-foam hybrid. Sleeps like a home mattress, not an air pad.

Better Material. Better Sleep.

Flexible, odor-free, and tough enough for kids, dogs, and everything in between.

Genuinely Soft

Softer and smoother than anything you expect from a car mattress.

At a Glance

A dark gray cylindrical duffel bag with top handles and the white 'Havnby' logo printed on the front, shown against a plain white background.

PACKED SIZE

26.4" Ɨ 16.9"

FlatCore_CloudCore_Battery

INFLATE TIME

60 Seconds

DURABLE MATERIAL

Water-Resistant 30D TPU

COMFORT & SUPPORT

7.5" Foam

WEIGHT LIMIT

660 Lbs

DEFLATE TIME

70 Seconds

Comfort should not take longer to set up than the drive.

Tent - 35 min average setup More time to pack wet
Traditional camp setups add steps before you can rest.
FlatCore keeps sleep simple: unroll the mattress, settle into soft foam support, and get comfortable faster.
Camper shell - permanent mod Resale value drops
Permanent mods are hard to undo.
FlatCore keeps your vehicle flexible while adding a foam-top layer that feels softer and more stable than sleeping on air alone.
A modular wooden platform bed frame with light natural wood slats and a dark gray metal frame, shown on a plain white background.
Roof top tent - $1,500 and up Plus rack and install
Roof top tents add cost, hardware, and permanent bulk.
FlatCore gives you a cushioned foam sleep surface without turning your vehicle into a build project.
Air Mattress Havnby Mattress
Setup time
10-15 min with pump
Unroll, under 120 sec
Soft & supportive comfort
Holds shape overnight
Slow leaks are common
Built-in pump
Insulation from cold floor

What real owners are saying

Jessica M., Mom of Two Ā· Austin, TX

Road Trip Essential

ā€œPerfect for long road trips. It inflates quickly, fits my SUV well, and gives the kids a comfortable place to rest during stops.ā€

Ryan K., Weekend Camper Ā· Denver, CO

Comfort That Lasts Overnight

ā€œSurprisingly comfortable for a car mattress. The material feels durable, and it stayed inflated overnight with no issues.ā€

Amanda L., Frequent Road Tripper Ā· Portland, OR

Great for Camping & Travel

ā€œEasy to set up, easy to pack away, and much better than trying to nap in a regular car seat.ā€

FAQ