The structure has to now we have not work ... #Update: It is :-)

But unfortunately too early ...

Let's start first of all with the quality of the materials that make a good and robust impression on me. For the price completely satisfactory.
The manual is well explained and supplemented by drawings that facilitate the construction.
When it since then with the construction works at all. Because this was with us not even possible.

The basic structure (the metal outer ring) could not be completely put together.
It consists of bent metal pieces that need to be pushed into one another only. Sounds easy, it was in our case, but not at all, as we have the last connection easy to get. The entire ring seems overall to be too small and is completely under tension, so that one the last two pieces simply do not get.
We tried it for nearly an hour and were in the end only with red heads and gray empty-handed.

Too bad.
As the other reviews sound so positive, I think we were unlucky and got delivered a defective product.

#### UPDATE: May 15, 2015 ####

Thanks to a helpful comment on my negative review, we have started a trial and the trampoline is now !!!!
It was not easy, but with strength and some skill, we did it!

We have the rickety backbone (the metal outer ring), which could not be stuck with each other, on edge and made us "purely hanged". So acquiesced before together all ring parts. Only a joint was still not justified.

Then we hung the jump power and complained (read: one has set it). The other has kicked against the not flush area with tidy force. Zack - everything is now rock solid, and the kids really enjoy using this trampoline.

Overall, it's really a very nice and high quality trampoline, with a stable side netting.
But building was unfortunately very difficult, but not impossible :-)