We hang out outside quite often, and our cat always just stares at us through the window, which makes us sad. We got this playpen for her to come outside with us, and we love that it is collapsable and easily stored away. We have found that she loves it so much that we just keep it out in the house. She was very curious about the christmas tee, so we put the tunnel under the tree to keep her away from the branches. She seems to have found some sense of ownership of the tree because her tunnel is underneath it. She's pretty protective of it!!Overall, we are very happy with this purchase. It brings our cat so much joy!!!