A unique oblong-shaped, hybrid habitat, Twist consists of a combination of wire framing and clear plastic components that allows you to see your small pet from all angles. In addition to providing a great view, Twist?s large wire frame at the upper half of the home also provides 360 degree air circulation ? which hamsters will appreciate. An oversized plastic door at the top opens very wide, allowing excellent inside access. The door is made of clear plastic that provides a great aerial view inside. The door has an easy-to-use sliding lock that prevents unwanted escapes.