S_ssoy Pet Cat Toys Collapsible Funny Cat Tunnel Tunnel Cat Kitten Tubes This collapsible tunnel is great for cat,dog,rabbit and other house animals both indoor and outdoor. Length:55cm/21.6 inch. Diameter:25cm/9.84 inch. Give your cat a private space Hide your cat's favorite toy inside the tunnel, your cat will love to attack it in the tunnel. Easy to fold for storage