Bushwalk Australia

G'day all, I recently purchased a STS UL sleeping mat and found it deflated slightly over night.
Is it normal to expect some air to escape over an 8 hour sleep or do I need to shirt front my local Mountain Designs!??

Hi
I have two of these one works perferfectly and the othr deflates slightly over the night. I have my suspicions i think its the one way valve dosent seat properly and lets out air. Have you checked the mat for punctures?

Also it could just be overnite cooling,

Is that a thing?...it was freezing, my water bottle turned to ice through the night!

DK, I suspected the valve also, either I didn't push the cap in hard enough or it seeping slowly through it somehow. Shouldn't be a puncture as the site was soft and flat. Did you not bother to return your faulty one?

Yes it happens to me all the time when sleeping on snow and it is one of the main reasons I carry the CCF pads as well. Make sure that the valve area is really clean too.

Normal. Air contracts when cold. Inflate as close as possible to going to bed.

Sent from my SM-N9005 using Tapatalk

slight deflation is within the norm, going all the way to the ground, that's a problem.

when packing them up i notice ones plump and ones softish instead of both being plump.i havent returned them but when i get fed up with it i will. Its not really an issue yet and soon enough will be looking to get something a little thicker.

Thanks for the replys people. I'm at ease.