Material: Our Tunnel Is Made of Polyester, Can Withstand Sharp Claws Without Leaving Scratches. The Stable Steel Frame Stands Up To Energetic Games of Hide-And-Seek, No Need To Worry About The Tunnel Collapsing. . Interactive Toys: The Interactive Ball Will Stimulate Your Cat'S Instincts. Chasing Game Will Make Cats Happy and Excited, Leading Your Cats Rocking, Jumping, It'S A Good Way To Keep Your Cat Fit and Happy. Applicable Size: The Tunnel Entrance Width Is 24.9 Cm, Suitable for Pets Under 7.3 Kg. Animals Under 7.3 Kg Can Pass Through The Tunnel At Will. Even If There Are Several Pets, Don'T Worry, Because The Inside of The Tunnel Is Big Enough for Two Pets To Play At The Same Time. . Features of The Tunnel: The Tunnel Is Supported By Iron Wire and Can Be Contracted. When Not In Use, Store It After Shrinking. Doesn'T Take Up Space. When You Need To Use It, Just Open The Rope That Secures The Tunnel, and The Tunnel Opens Automatically.