A focus mitt is a padded target attached to a glove and usually used in training boxers and other combat athletes.
The use of focus mitts is said to have come about as Muay Thai and Far Eastern martial arts made their way toward the United States in the late 1700s.
The concept first began with using foot tongs or slippers on hands to absorb the impact from kicks and strikes.
The person holding the focus mitts will typically call out combinations and "feed" the puncher good counter-force while maneuvering and working specific skills.
When wearing focus mitts it is important not merely to hold them but to actively "feed" them into the punches, to balance their force and prevent injury to both parties.