Really smooth and comfortable mattress, despite my 112kg I lie very well both on my back and side. Awesomely effective built-in pump for both filling and deflation.
I have had mine in a Tesla Model 3. 12v extension cord comes with it as the M3 lacks it in the luggage.

The Havnby Foam Mattress is a true game-changer for Tesla owners. The memory foam, thoughtful design, and adjustable firmness make it ideal for road naps or camping. It’s easy to inflate, deflate, and store. As a side sleeper, I found it very supportive and surprisingly comfy. For anyone traveling in a Tesla, this mattress is worth every penny.

I was a bit unsure about the 6cm thickness at first, but I’m pleasantly surprised by the comfort. It’s better than expected! The price-to-performance ratio is excellent—affordable yet well-built. I’m genuinely looking forward to my first night using it in the car. If the initial comfort holds up, this could become my favorite camping mattress.

After trying two other mattresses, this one stands out for its comfort and convenience. It fits my Model Y snugly and covers every corner well. Setup is quick, and it packs down compactly. The size and thickness are well-balanced for sleeping and storage. For Tesla trips, this is hands-down one of the smartest buys I’ve made.