This is an original ant-keeping case made by our store. Hybrid Nest type Cave - The glass cover is compact and doesn't take up much space, while also being designed to allow ants to live comfortably. - Humidity is maintained with cotton and sponges on both sides for cleanliness. (Cotton is included when shipped) - There are small holes on both sides of the nest, allowing you to manage the nest's humidity by providing water to the cotton, etc. - High-quality glass is used for the lid, allowing for clearer observation. - There are connection holes on the left and right sides, allowing you to freely connect nests and feeding areas, and to enlarge the nest as needed. - It is made with a sturdy construction for safe keeping. - The glass lid is secured with screws at the four corners for stability. Suitable for small to large-sized ants found anywhere in Japan (such as Formica japonica and Camponotus japonicus), as well as foreign ants such as green head ants, meat ants, and spiny ants. Easy to observe and keep, making it ideal for children's science projects. Materials: PLA (safe material, harmless to the human body), cotton Glass: 2mm Size: Approximately 10.5cm x 11.3cm x 4cm Connection Hole: For 8mm tube (inner 6mm) Tubes for connection are not included. Screw-type stoppers are included for the connection holes on both sides. Shipping will be via Kuroneko Yamato's Compact service. If you would like to purchase multiple items or combine them with other products from our store, we will create a separate listing, so please feel free to contact us. Each item is made by our store, so please allow 2-5 days for preparation.