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Don't let cooler weather cut your camping short. The TentBox Thermal Kit attaches seamlessly to the inside of your roof tent, instantly transforming it into a cosy, fully insulated sleeping pod. Whether you're planning a winter trip or just love being extra cosy at night, this kit is the perfect upgrade.

Compatible with the GO, Lite, Lite 1.0, Lite XL, Classic, & Cargo.

What's included?

1x Thermal Kit

Features

Premium quilted insulation: Sewn from a durable quilted fabric and packed with high-performance internal insulation to retain heat and block out chilly drafts.
Effortless installation: Incredibly easy to use, the liner quickly and securely clips directly onto the internal frame of your TentBox in just a few minutes.
Integrated windows & doors: Features built-in zip openings so you can still enjoy the views, easily enter and exit, and adjust your roof tent's ventilation.
Tailored fit: Specifically designed to hug the interior contours of the TentBox for maximum thermal efficiency and zero wasted space.
Packable design: Lightweight and easy to fold down when it's time to pack up camp and head to your next destination.

Materials

Sewn from a quilted fabric, filled with insulation.

Delivery & returns

Delivery: Fast delivery from our warehouse in Southampton.

Returns: Return for a refund within 30 days of delivery.

If required, we can arrange for the item to be collected, the cost of which will be deducted from your refund.

*Free delivery for orders over £50.

For full delivery and returns information, click here.

Designed in the UK
Two year warranty
0% finance available

Customer reviews

Verified buyer

WARM & COZY IN A STORM!

Needed this for Easter bank holiday for a camping trip. Ended up getting hit by storm Dave. However my son and I still slept in just shorts. We were lovely and warm. Great bit of kit and fit perfectly with my model of Tentbox.

Mr J.
Verified buyer

GAME CHANGER FOR CAMPING!

We recently took our TentBox Lite XL out for its first proper trip, and it has completely changed the game for us. The sheer size of the super-king mattress is incredible—it’s the first time we’ve been camping where we didn’t feel like we were on top of each other.A few things that really stood out:Cozy Vibes: We used the thermal inner for the first time, and it made such a difference. Even with a drop in temperature at night, we stayed perfectly warm and noticed way less condensation than our old ground tent. It makes the space feel really premium and snug.Teddy-Approved: The biggest win was how well our dog, Teddy, handled the setup. The telescopic ladders are sturdy and easy to adjust, which made it much simpler for us to help him up and down safely. He loved being high up with us and spent the whole night curled up on the memory foam mattress!Super Simple: Setup was about 5 minutes, which is a lifesaver when you just want to get the kettle on and relax.If you’re looking for a rooftop tent that actually fits a family (and the dog!), the Lite XL is worth every penny. We can’t wait for the next adventure!

Richard C.
Verified buyer

SNUG AS A BUG ❤️

The thermal kit really does make a difference the outside temp 2° and i was snug as a bug ❤️ my only criticism is that the clips can be a bit tricky when it comes to taking it down and also once up you loose the storage pockets and places to hang lights.

Natasha R.
Verified buyer

Nice and warm.

The thermal kit came in handy as it was a cold night the first time I used tent box. Works well, kept us warm.

James C.
Verified buyer

GAME CHANGER FOR COLD MONTHS!

Absolutely recommend, brilliant piece of kit. Complete upgrade and game changer for the colder months

Mia E.
Verified buyer

GAME CHANGER FOR WINTER!

Absolute game changer this is. You can tell the difference jut by putting you hand between the liner and the tent and notice straight away the temperature difference. So glad I bought it for the winter nights

Daren A.