In fact you have to the mat in the first uses leave longer or nachpusten. But this is quite normal, since the "Selbstaufblas function" yes through the internal foam is triggered. If this is compressed long it takes until it is fully deployed. Therefore, the sleeping pad should be stored inflated! (Which is probably no one makes, he prefers nachpusten :-)
After using the rolling up is of course troublesome, but with a little practice and body use no problem. However, the mat easily fit back into your bag! It would have been nice if a strap would be attached to the bag so you could wear the mat well over his shoulder. But there is only one idea can be easily retrofitted itself and therefore does not lead to a point deduction.
It was reported by a crackling. In fact crackled my mat. I then wrote to the Grand Canyon, if this was for example. Production due to the compression of the foam and would be unnecessary after some use. So completely was able to get the customer service as well as unable to help, saying that they would also funny to. Therefore, I have converted the mat at Amazon again. These mat crackles.
However, it is so that when lying down, this is significantly less and me it is later no longer noticed. Although I am a sensitive sleeper.
When I was in a camp shop saw the mat by chance, I have tested there as well and the crackling was also present. Apparently this is actually in material or production reasons.
Since I'm usually completely satisfied with the price-performance, even this does not lead to a point deduction.
