PLACE TO HIDE AND PLAY - The cats need a mysterious field where they can exercise and self-amusement. Spacious connected tunnels appeal to cat to hide, stalk, bounce and chase with each other in it, encouraging healthy activity and bringing out your cat's natural hunting instinct. S-TYPE TUNNEL - The s type can increase mystery more than the straight type, and provide more entertainment space. With crinkle crackle paper andamp peephole, it will create intriguing sound when cats step on it, and cats can monitor the outside world. PREMIUM MATERIA - The high quality tear-resistant polyester cloth wrapped around a strong sprung-steel frame, strong and durable, no worry about scratching and deformation, stands up to crazy cat scratcher antics. 4 TYPES AVAILABLE - 2-Ways Tunnel (Lenght: 122cm, Diameter: 25cm) 3-Ways Tunnels (Each Tunnel Lenght: 60cm, Diameter: 25cm) 4-Ways Tunnels (Each Tunnel Lenght: 60cm, Diameter: 25cm) 5-Ways Tunnels (Each Tunnel Lenght: 60cm, Diameter: 25cm). PORTABLE AND CLEAN - This cat tunnel pops open in seconds, collapsible designed makes it easy to fold down in seconds and secured by the provided elastic band, provide a storage bag for easy travel and storage.