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 & 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.