Habitrail® Classic is a main habitat unit that serves as a safe and secure central living area for hamsters. Habitrail Classic is completely compatible with all other Habitrail® items. The cage is constructed of plastic and wiring for both durability and excellent air circulation. The deep base design is easy to clean and maintain. A large plastic door allows easy access to your pet and it has a lock to keep your pet securely inside. Two windows allow you to connect other Habitrail® items using our patented Lock Connectors (sold separately). Habitrail Classic also includes a balcony with a secure ramp for hamsters to climb up, a quiet exercise wheel, a chew-proof water bottle and holder with stainless steel tip, a food dish, and a litter guard.