A market that covers two of the three match results in one bet, so it wins on either outcome you back.
The three options are 1X (home or draw), X2 (away or draw) and 12 (either team to win). Because you cover two results, the odds are shorter than a straight 1X2 pick. A draw still wins a 1X or X2 bet, which is the key difference from draw no bet. See our double chance guide.