Usage was a 4-week canoe trip in the wilds of Canada in the Yukon teritory.
In the first week, the mat also kept its promise: they blew themselves well on, it was only slightly nachblasen by mouth required. When lying pretty good comfort, even if the surface is a bit slippery. Pooling was at this thickness of course more expensive but with practice and experience that goes quite well.
Now the weak point: After 1 Week use the mat LEAKING was, although I had only used the tent and had treated with care. The leak was formed at the weld seams close to the valve - NO CHANCE TO REPAIR despite entrained repair kit - and where I had 3 weeks left wilderness camping without spare possibility in front of me.
From there I woke up every day at night with pain, because I'm worn down to the hard ground - a nightmare that has quite spoiled my wilderness trip.
After my return I have sent back the mat with above information to Amazon. The mat was withdrawn without hesitation and as a "consolation prize" I got an Amazon voucher of 5, - ......
Whether this outweighs the vermiesten holiday and the pain?
Subsequently I have seen in a few customers REVIEWS that I am not the only one with the problem.
So lying comfort and application good for short trips to the campsite, who needs reliable equipment: Stay away!