The Swift Feather (Japanese: しゅんぱつのハネ Instant Feather), known as Swift Wing prior to Generation VIII, is a type of medicine introduced in Generation V. It is a feather that slightly increases the Speed of a Pokémon.
When used from the Bag on a Pokémon, adds 1 Speed EV to the target Pokémon per use. It also increases the Pokémon's friendship a little.
The Swift Feather is consumed upon use and cannot be used in battle.
In Reunion Battles In Nimbasa!, a Swift Feather was included in the full set of feathers promised as a prize for winning the Club Battle tournament. The set was eventually won by Iris, who later sent it to the Village of Dragons.