Kerbl Metal Run with escape barrier

I bought one a while ago, and after three years it’s still in perfect condition, as long as you bring it inside during autumn/winter. But if you’re on your own, you might want to think twice or be really patient, because it’s honestly the hardest puzzle ever, plus it’s pretty heavy and tricky to put together by yourself. But my rabbit, on the other hand, managed to eat in it for three years without any problem, no supervision needed, it’s really spot on.