The Habitrail Ovo Maze Unit Pink has a dual retractable locking doors to provide easy access simple cleaning and a safe secure environment for your pet. The deep base of the Habitrail Ovo Maze Unit Pink will keep bedding and other materials securely inside. The Habitrail Ovo Maze Unit Pink comes with 1 window and lock connector and a chewable cardboard maze which once your hamster has chewed to pieces can be replaced with another one of the 4 interactive chewable cardboard maze designs for more hours of fun for your hamster. The Habitrail Ovo Maze Unit Pink has 2 expansion points so can be added on to the Habitrail Ovo Suite or Habitrail Ovo Pad Unit.