Add a little adventure to your feline friend's day with this krinkly, collapsible tunnel! Available in three lengths: 20", 36", and 52", you can choose the perfect fit for your home, and for your pet. Just pull one out of its included carrying case and watch it spring into shape. Our tunnels are super sturdy, boasting a thick, strong internal spring, double-ply outer walls and double-sewn seams that will stand up to rigorous play, even agility practice for small dogs.