A double bet is when you make two selections in the same bet.
You need both selections to win in order to see a return, or both to place if the bet is each way. If just one fails, you will lose.
Your return obviously depends on what the odds are. For a double bet, the bookie will combine the odds for each selection to create new odds.
When betting online, these odds will be shown to you before you confirm the bet.
You can see how odds are combined by using our free double bet calculator below.