CritterTrail TWO offers two spacious levels of living space for all hamsters, gerbils or mice. CritterTrail TWO comes complete with two Comfort Shelves, a 10oz. water bottle, food dish, exercise wheel and three Fun-nels climbing tubes. CritterTrail TWO features Super Pet's unique 'Petting Zone. The cool 'Petting Zone is a special area of the home that you can open so you can pick up your pet or provide them with a tasty treat.