Best Overall · 1 of 5
Lost Horizon Option3 Self-Inflating Foam Camping Mattress

- 4.5 inch self-inflating foam
- 5.5 lb foam filling
- Adjustable softness
Our take
The most cushioned option here, with firmness you can tune.
Why it made the shortlist
The Lost Horizon Option3 is a 4.5 inch self-inflating foam camping mattress with 5.5 lb of foam filling. It mixes foam and air for adjustable softness, with a stable and quiet surface.
Next to the Kingfun, it is 1.5 inches thicker and adjusts firmness. Against the ZOOOBELIVES, it adds foam support.
It suits side sleepers who want the thickest, most adjustable mattress. The twist valve inflates easily.
What works
- Thickest mattress in the group
- Adjustable softness
- Quiet stable surface
- Easy twist-valve inflation
Watch out for
- Listing says deflation is challenging
- The catch
- The listing itself warns deflation takes effort.






