Curiosity CAT Chute Cat Toy Collapsible Tunnel - The BIGGEST Cat Tunnel On Amazon - Large Enough For Multiple Cats - Fun for both Cats and Dogs - Peephole design for Interactive Play Extra Large for Multiple Cats! 38 Inches long with a 18 inch diameter. Big enough for Cats and Dogs! Endless hours of fun for your cat and a great exercise activity too! A large peep hole allows you to dangle cat toys for your favorite furry friend or just watch their cuteness inside the tunnel. Super Easy Storage with a collapsible design allows for quick hideaway Curiosity Cat stands behind our quality and sturdy design with a Lifetime Warranty. 20% of proceeds go to Save the Children Foundation