The Pet Life 3-Way Kitting-Go-Seek Interactive collapsible passage Kitty Cat Tunnel is composed of crackle tear-proof polyester and a durable lightweight inner wiring frame. Features 3 connecting striped expandable tunnels with a peep hole located at the center. Great for usage with multiple cats. The Cat tunnel completely collapses and folds. perfect for outdoor fun or travel. Perfect for all sized cats. Available in Multiple Colors. SIZING MEASUREMENTS (INCHES) LxWxH: 25 x 35x 3.