Light-colored Havnby FlatCore mattress for Tesla Model YL shown on a black background.
Light-colored Havnby mattress packed into the open cargo area of a white Tesla Model YL.
Woman sleeping under a blanket on a Havnby mattress inside a Tesla Model YL.
A woman lies on an elevated car bed mattress inside a vehicle, with text reading 'Levels the Seat Slope for a Flatter Sleep.' The scene shows the product in use within a real car interior and outdoor forest view, so this is Lifestyle rather than Product/Packaging.
A dark gray car interior accessory shown installed between the front and rear seats of a Model Y or L, with white text reading 'Model Y L Gap-Filling Support Design' overlaid on the lower left. The seats are light gray, and trees are visible through the windows.
Close-up of the firmness guide and foam section on the side of a Havnby mattress.
Close-up of the built-in pump controls on a Havnby mattress.
Close-up of the soft-touch Havnby mattress surface and printed logo.
Folded, deflated Havnby mattress being pressed down for compact storage.
Gray Havnby mattress carrying bag stored in the lower cargo area of a Tesla Model YL.
Woman resting on a pillow on a full-width Havnby mattress inside a Tesla Model YL.
Woman and dog relaxing on a Havnby mattress in the open rear of a Tesla Model YL.
Woman sitting cross-legged on a Havnby mattress in a Tesla Model YL with a camera and camping items.

FlatCore Hybrid Support Mattress for Tesla Model Y L - Solo Edition

A flatter bed for one, with space for gear and easier access.

Sale price$499.00

This is a pre-order item. Ships in approximately 1 month.

60-Day Sleep Trial
3-Year Warranty

We started designing for the Model Y L as soon as it arrived, giving solo travelers a comfortable bed ready for their first trip. FlatCore Solo levels the sleeping area on the right while keeping the left side open for gear and getting in and out.

A flatter place to sleep: The shaped base compensates for the folded-seat slope, with no separate platform needed.

Space to stretch out: More than 6½ feet of sleeping length, with room beside you for bags, a cooler or your dog.

Leave the bed set up: Get in through the left rear door and move onto the mattress without packing it away each time.

Cushioning with support: Foam softens pressure around your shoulders and hips, while adjustable air lets you find a comfortable firmness.

About a minute to inflate or compress: The integrated 12V pump helps you settle in and pack away with less effort.

1 Mattress ≈ 2–3 Hotel Nights Near A National Park

A solo-width Model Y L sleep system levels one side of the cargo area and leaves the other side open for gear.

Is FlatCore Solo Right For You?

Made for solo sleepers who still need room for gear

A full-width mattress works when the whole cargo area can become a bed. Solo makes more sense when you want a flatter place to sleep without unloading everything else.

When Your Gear Need To Stay Close

“If it’s just you, get a single mattress so you can keep stuff next to you.”

— Model Y owner, r/TeslaCamping

When The Folded Seats Stills Feel Too Steep

“The rear seats don’t fold completely flat … which put a lot of pressure on my back.”

— Model Y L owner, r/ModelY

When You Want Less To Move Before Bed

“I’m torn between the appeal of the Solo because it’s less stuff to move around.”

— Model Y owner, r/TeslaCamping

Core Design Details

Key Features

Close-up of a Havnby mattress support section fitted between the seats of a Tesla Model YL.

A flatter bed, built into the mattress

The Model Y L gains plenty of length with the seats folded, but the surface still slopes. FlatCore adds support where the cabin sits lower to create a more even place to sleep.

Light-colored Havnby mattress installed from the front seats through the cargo area of a Tesla Model YL.

Room to sleep, with space left for your gear

FlatCore Solo sits on the right, leaving the left side open for gear and a clear way in through the rear door. You can leave the bed set up between stops instead of packing it away every time you get out.

Close-up of the inflation level guide window on the side of a Havnby FlatCore mattress.

Foam comfort with adjustable air support

Foam adds cushioning around your shoulders and hips, while the air chamber holds the mattress in shape. Add or release air until the firmness feels right for you.

Close-up of the built-in pump control panel on a Havnby FlatCore mattress for Tesla Model YL.

Set up and pack down with the built-in pump

Plug the mattress into the Model Y L 12V outlet to inflate it, then use the same pump to compress it for storage. There is no separate pump to pack or misplace.

Gray Havnby mattress carrying bag stored in the lower cargo area of a Tesla Model YL.

Designed around the Model Y L cargo area

The outer shape follows the available cabin space, while the base accounts for the change in height below it. Confirm the supported model years before publishing compatibility.

Additional Benefits

Hand pressing the light-colored surface of a Havnby mattress.

Comfortable to sleep on and easy to clean

The soft-touch TPU surface feels less like a conventional plastic air mattress. Dirt, pet hair and small spills wipe away easily after the trip.

Woman using a laptop while sitting with a dog on a Havnby mattress inside a Tesla Model YL.

A more comfortable way to relax in your car

Take a proper break between long stretches of driving, recharge between remote-work sessions or settle in after a day outside.

Size On

Dimension diagram of the Havnby FlatCore Solo mattress for Tesla Model YL.
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

28.3" × 13.4"

FlatCore_CloudCore_Battery

INFLATE TIME

56 Seconds

Specifications

Fit
Tesla Model Y L
Layout
Solo Edition
Mattress size
79.1" x 30.7" x 7.9" / 2010 x 780 x 200 mm
In-vehicle storage
Fits in the front trunk or rear underfloor storage compartment
Inflation time
56 seconds
Compression time
62 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.
Gray freestanding camping tent with an open front entrance on a white background.
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.
Black SUV fitted with an open rooftop tent and ladder on a white background.
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

Ali

2025 Toyota RAV4 XLE Owner

"Setup took two minutes, pump included, module charges over USB-C. Fit the RAV4 perfectly with no platform needed, and slept two of us by the lake like a real mattress."

Person reclining on a light-colored Havnby mattress in the cargo area of a Toyota RAV4.

David L.

2022 Toyota RAV4 Owner

"Took the whole family camping in the RAV4 for the first time. Kids were asleep before we finished making dinner, and nobody complained about the ground once."

Jordan M.

2023 Tesla Model Y Owner

"Fits the load floor perfectly, no gaps, no sliding. Woke up in the Sierras on Sunday feeling more rested than I expected from a car."

Mike B.

2020 Ford F-150 Owner

"Twelve hour shifts two hours from any job site. Now I lay the seats down, sleep in the truck, and I am back at it in the morning without the drive home."

Ingrid S.

2024 Model 3 Owner

"Drove through Jotunheimen after a week with no plans. The fit was exact, and the material held up through four nights without any issues."

Life with Havnby

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