We bought the trampoline in May 2012, after a very fast delivery (about 2 days) we had to build (relatively easily) find that the jumping mat many flaws (loops) has. This deficiency has been resolved after the service call inerhalb few days with the delivery of a substitute jumping mat. But after a very short time (about 2 months) turned out these were (12 and 14 years Weight Approx 50/60 kg) did not stand up and pulled out the feathers of the burden of our 2 children. After a complaint at the customer service new springs came but even these have now after 2 months, no satisfactory clamping force more! My conclusion: the trampoline is obviously only suitable for smaller children, the specified maximum load of 180 kg is just a joke!