Team Medallion

Team Medallion is an item in Pokémon GO. It allows a Trainer to change which Team they are on.

The Team Medallion can only be obtained by being purchased in the Shop for. After activating the item, the Trainer will again be presented with the Team Leaders in a similar fashion to when they originally selected their team, only this time there won't be any dialogue form the Leaders. After a Trainer changes their team, this item will not be able to be purchased again for 365 days.

In-game description
''A unique coin that enables a Trainer to change teams. It can only be purchased from the shop once per 365 days.''

Trivia

 * This item was added in 0.135.0, which is when the GO Snapshot feature was enabled.