High Quality Material: Our pet tunnel uses eco-friendly material from premium supplier. It's made of super-durable, ripstop polyester, and features a spring steel frame to keep its shape. The tunnel is waterproof, durable, and resistant to scratches and bites. Designed for pets: five large tunnels connected with cracked crinkle paper, peephole. This popular tunnel gives your cat more ways to fun and gives him more room to roam, jump and hide. Foldable and Portable: Collapsible design with storage bag makes the tunnel easy to fold up in seconds. It is therefore ideal for travel, indoor and outdoor activities and only requires a small space for storage. Improved space: Each tunnel measures approximately 25cm in diameter and 30cm in length, making it a great accessory for multiple cats, giving them plenty of entertainment space while improving their agility and health. Function ENHANCED: Our cat tunnel combines exercise and therapy, providing hours of mental stimulation and physical play for your pet, allowing them to burn excess calories, boost their confidence and improve their health.