This chapter provides a review of international practice theories with a on how practice can be studied and empirically reconstructed. It offers an approximation of the character of practice theory by first discussing how the practice perspective has been introduced in International Relations, second, by arguing that advocates of a practice perspective share an attitude and a commitment to a range of ideas and themes. Practice has become a core concept in the field of international political sociology. The interest in centring theorizing in practice is spurred by a larger development across the social sciences that have been described as ‘practice theory’ or a ‘practice turn’. Understanding practice theorizing as an attitude, shared commitments and appreciation of the core themes, also clarifies that it does not necessarily imply that research has to follow a collectively agreed definition of practice. The different practice accounts discussed earlier share a commitment to the primacy of the empirical.