Very sturdy core construction, but the finishing details aren't great. The pads don't stay together very well. The springs are the same as you would get on a low end trampoline, so it does not feel like a pro bounce. But the biggest issue is that the safety net attaches in a way that cuts down the size of the surface, making it feel smaller than it should. It is a good trampoline at $500, but I wouldn't pay over $1000 for it.