These are replacement pod for the Geekvape Aegis Boost Pod Device. This listing is specifically for the Aegis Boost Pod and only takes the Aegis Boost Coils. These pods are available in 2ml. The Geekvape Aegis Boost Pod Kit features 2 x plastic pods of 2ml juice capacity and takes replaceable coils, saving you a bit of money in the long run. Another incredible feature of these pods is they are one of very few out there with adjustable airflow options.