Ware Manufacturing Tunnels of Fun Small Pet Hideaway, Medium Small pet hideaway tunnels of fun, medium Economical hideout Totally pet safe materials Measures 9-inch width by 4-1/4-inch depth by 4-1/4-inch height Medium Sized Hideaway Tunnel for Hiding, Running and Playing Made from Cardboard that Pets Love to Chew Gives Critters a Sense of Safety and Security Safe to Chew and Fun to Run Through Cozy Nesting Fluff Included Measures 9" Width X 4-1/4" Depth X 4-1/4" Height