Your caterpillars have enough air within their cup! Learn all about how they are able to breathe in their cup from Insect Lore When you receive your Insect Lore caterpillars, they will come in a clear plastic cup with a mesh lid. This allows for proper ventilation and airflow as they go through the butterfly life cycle. Take a glimpse into the fascinating world of insects and inspire a love of exploration and discovery in your children and students! Nature Comes Alive as you experience the magic and wonder of insect metamorphosis in your home or classroom! Learn More About Insect Lore Caterpillars: insectlore.com/collections/butterflies-caterpillar-refills/products/cup-of-caterpillars-shipped-live-now Stay connected with Insect Lore: Instagram: instagram.com/insectlore Facebook: facebook.com/insectlore Pinterest: pinterest.com/insectlore #InsectLore #Caterpillars #Butterflies