Abstract: A boxing device (1,400) serves for performing a harmless boxing match. The boxing device (1,400) has a base (2,5,53,87), a buffer (3,6,54) configured to hit a target (A,B,75) without injuring the target (A,B,75), and an extensible joint (4,7,54) that connects the base (2,5,53,7) and the buffer (3,6,54) to move the buffer between a retracted position and one or more extended positions. The extensible joint (4,79,82) is an element assembly of at least two extension elements (8,9,55,56,80a,80b), the extensible joint is configured to move the buffer (3,6,54) into the one or more extended positions by virtue of the propulsive force transferred to the extensible joint (4,79,82) by a punch done by a hand of a boxer (A,B) holding the boxing device (1,400), and auto-retract after the punch has been performed. The harmless boxing match is an enjoyable and beguiling exercise, which furthermore imparts good and healthy motions to the participants.