High Quality & Durability --- large cat tunnels are made of tear-resistant polyester material, which is sturdy and easy to clean. The fully enclosed steel frame allows your beloved pet to play without injury, while the steel with elasticity is not easy to deform. Get More Fun & Keep Active --- Our cat tubes and tunnels design with 4 way S-tunnel, a peephole, great for cats to hide, stalk, jump and chase each other inside. The cat tubes can provide hours of exercise and self-amusement for your cat even if you're not at home. Convenience to Use --- This cat tunnel toy is foldable, it's easy to fold up and store when not in use. Collapsible design features space-saving, which is portable for you to bring this cat toy to any place. Product Size --- Each tunnel is 50cm long, with a tunnel opening 25cm in diameter and a peephole 5.9" in diameter, which is roomy enough for cats of all sizes. This folded cat tunnel weighs 495g, which will not take up too much space. Perfect gift for your pet --- Our s type cat tunnel can increase your pet's exercise and help him/her become more healthier. They will fall in love with this crinkle cat tunnel. And if you have any problem about our collapsible pet tunnel, please let us know.