Habitrail OVO Chewable Cardboard Hamster Maze The Maze with Cardboard Insert is the perfect habitat your Hamster to burrow and forage for food and treats Maze Measures 13-1/2-inches wide by 12-1/14 inches deep by 9-inches High The Maze has Dual retractable locking doors provide easy access to your pet Ideal add-on to any Habit rail Habitat Value Pack Includes 4 chewable cardboard Maze inserts for nesting and foraging