So what am I doing wrong?
Have had two vango SIMS now, both hopeless and losing air out of the valve during the night to point after a few hours we might as well be on the floor. Before these we had the standard blow up flock air mattress thing. All I want is a decent mattress for camping and weekends at family where we to sleep on the floor?
Camping shop can't help just say that's how they are and some will go (after 3 uses at £80 odd quid?)
So what do I get now that will work (think I have lost confidence in SIMs and those valves!