Premium Quality and Service: PAWZ Road strictly controls every process of production. And we have an efficient after-sales team. If you have any question, pls feel free to contact us. Safe and Easy Storage: This donut cat tunnel consists of two semicircular tunnels and a pet mattress. Rope buckles and zippers are used at the joint for easy removal and installation. It pops up seconds and folds down into small item that is super easy to carry and storage. Extra Bonus of Fun: The play tunnel equipped hanging ball at the both entrance add more way to have fun that brings hours and hours exercise and self amusement as bating and swatting. A Wonderful Hiding Spot: This nice cat tunnel bed can be turned into a circular or S-shape. Its circular design add the additional level of agility and bring more adventure. It has 2 built in peep holes allow them to stick their head out and observe the outside that makes it an amazing place to hide and stalk from. Dual Function: The donut / circle design of the cat tunnel and plush toy ball meet the cat's play needs and desire, and can bring unlimited fun to the cat. There is a mat in the middle of the tunnel for cats to rest and sleep in without disturbance. Diameter after installation: 95 cm; Tube diameter: 25 cm; Inlet and outlet diameter: 24 cm; Diameter of the nest cushion: 45 cm.