My Neoair is stored blown up behind the spare bedroom door as are all the other mats and I've noticed that over a couple of days that it's quite soft.
Not devoid of all air, just softer than fully blown up.
I've just had it in the bath to see if theres a slow puncture and can't see any bubbles.
It's probably not going to bother me as I would normally never stay in the same place two consecutive nights.

Anybody else noticed this?

I store mine rolled up, as per the instructions :?

flatfishy wrote:My Neoair is stored blown up behind the spare bedroom door

As in kaboooom?

Doesn't this happen with all air beds anyway as air becomes denser with temperature changes?
You blow warm air in and it gradually cools... Just a theory...

It's known as "tempering", same thing happens with rafts, pack rafts etc. You inflate hard, put it in cold water and the relative pressure drops. Try putting it in a warmer room and see if it gets firmer.
Either way if it's been there days or weeks it should be fine, unless you sleep that long :D

As Ian says instructions are that they can be stored in its pack. I do store my standard thermarest inflated though.
I have noticed that they have gone down a bit overnight in colder conditions though.