Changing the three types of clothing 三種更衣（事續、行續的外、內、密修持）

Changing the three types of clothing are actions which are part of the conduct of the yanas of kriya tantra and charya tantra.

• Changing one’s outer clothing means to put on clean clothes,
• changing one’s inner clothing means to guard one’s vows, and
• changing one’s secret clothing means to visualize the deity.