This cage is made of fiberglass. It is set up as a forest environment. The features inside are all built into the enclosure and can't be removed. The inside background is hand painted and covers everywhere above the built in rocks. The water features both have their own drains to change water. Both have built in plumbing that exits cage at rear through one location. One is a deep pool that holds over a gallon and the other is a shallow pool that holds about a quart. The drain for the shallow pool is disguised as a rock so it's not visible. The cage opens from the front and has two locks w/keys to secure it. Being made of fiberglass it is super easy to wash and disinfect. It has a vent at the top and a exit for electrical power cord for lighting. The front door is fiberglass and glass to view through.