with enough room for toys, roomy enough for your cat. Structure: Sturdy spring design can increase the service life of the tunnel and maintain its shape, easy to deploy and fold, durable and resistant. Design: The design of the rollers can prevent cats from being injured. Foldable, convenient for storage and travel. Powerful fun: The multi-hole tunnel gives the cat the pleasure of free shuttle inside, a small ball hanging inside attracts the cat into the tunnel.