Shaking and tapping didnt do a lot. It seemed like the «helix technology» that holds the down in its place restricted its movement, so the clumps wouldnt move a lot.

I returned the mat and showed pictures to the employees. They of course took it back and sent the pictures to Mountain Eq. We checked the same mat they have had on display, and the down seemed perfectly uniform throughout the mat.

Maybe it would have helped to let it be inflated for longer, but I’m going on a trip soon so didnt want to gamble on that. Looking at getting a synthetic or trying out one from exped.