great fun
My two cats both love these. they have a tunnel already. but i bought these for outdoors. I have bought two, and am about to order two more so i can form a square for them to chase and lol inside. they adore them.
both bengals, one kitten who loves to use these, and my two year old boy bengal loves them too. so not just kitten.
they're probably not the strongest i have ever seen. but they are very good value, and i am pleased with them for the garden.