The Living World Small Pals Pen is a versatile, easy-to-use tool that can be used in a variety of ways. The pen doubles as a small animal carrying case, nursery, terrarium, or aquarium, allowing you to easily view your pet. The secure, snap-locking lid is durable and lightweight, making it easy to clean with breakaway hinges and the removable lid. The Living World Small Pals Pen is perfect for any angler who wants to keep their fish safe and secure.