The large cages are made of heavy-duty wrought iron, which is far superior compared to the thin, low-grade metal bird cages on the market being marketed towards exotics and small animals. These cages are designed specifically for the needs of exotics and small animals. The cages are manufactured by the experienced professionals with quality materials and workmanship. They include easy-access large doors, strong metal locks, wheels for mobility, and pull-out trays for fast cleanup. All of the large cages are finished with a pet-safe powder coat, and are well known for their durability that can lifetime of your pet. Select cages include free metal shelves, ladders, feed dishes, climbing posts, and a bottom storage shelf (see individual descriptions for info). Select cages also have custom-made cage covers available, which provide a temperature-controlled, dark, peaceful atmosphere. These covers block bright light, contain messes, give privacy from other pets, protect against cool drafts during the summer, and keep heat in during the winter.