They are members of the 15-strong Barnsley Black Heart Rollers, the town's first roller derby team.
The sport is made up of two teams of five, who roller skate in the same direction around a track.
Play consists of a series of short matches known as 'jams' and both teams have a scoring player, known as a jammer, who has to score points by lapping members of the other team.
The rest of the team try to hinder the opposing jammer.
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