The square cage: One side of the cage is made of transparent vinyl material convenient for watching caterpillar changes. Mesh on other 5 sides promotes healthy air flow keep the caterpillars safe and comfortable for the duration of their stay. The zipper side door design makes it easy to feed these cute little ones. The round cage: Fine breathable mesh for good airflow to keep critters safe with tenacity handle for easy carrying outside. Manufacturered by YUCAN. Collapsible design for easy storage and reusable the unfolded measures: 16 x 16 x 24 and 12x 14. In this package you can get two monarch butterfly habitats. Both are pop-up design please pay attention to surrounding items when opening to avoid damage to others and surrounding items. Both the monarch butterfly habitats sit straight without shaking rocking and moving. Safe to use for raising bugs and butterflies observing through the net learning about insect life cycles.