This is our second trampoline. the first model (from the ALDI) the Sicherheitsnatz crack very quickly and the foam pad over the feathers decayed rapidly. Now we have a second. This model! The structure was quite simple, the network makes a stable impression. The ladder is important, especially if you have smaller children. The construction lasted about 1.5 hours, with a walnut box with a matching Allen key and a nut for the mother is very beneficial. Otherwise, you need no tools, just a flat space, which is large enough. Children have occupied the trampoline and bounce quickly since about music and their own choreography. The permissible "jump weight" is also quite high and sell notwengide safety reserves. All in all a super great garden fun. It is advisable also to use the included rain cover.