An Airt is the path left by a spirit through the Umbra. This path may take a variety of forms, depending on the type of spirit, the destination, and the perceptions of the being currently traveling the path. Garou may make use of airts to get between realms of the Near Umbra, but doing so is often tricky: keeping to the shifting path takes skill, and spirits are not always direct in their routes or cautious about the risks they take. Sometimes a spirit simply discorporates, causing an airt to dead-end in the void between Realms.