A Treble bet in sports betting is a type of accumulator bet that involves three selections. When you place a Treble bet, you are essentially combining three individual bets into one, with the requirement that all three of your selections must win for the bet to pay out.

Here’s how a Treble bet typically works:

1. **Selections**: You choose three different events or outcomes from different markets or sports. These could be football matches, horse races, tennis games, or any other event that the bookmaker offers odds on.

2. **Odds**: For each selection, you will be given odds by the bookmaker. These odds reflect the likelihood of that particular outcome occurring.

3. **Stake**: You decide on the amount of money you want to bet, known as your stake.

4. **Calculating Returns**: If all three selections win, your returns are calculated by multiplying your stake by the odds of each selection, and then multiplying the results together. For example, if you bet £10 on a Treble with selections at odds of 2.0, 3.0, and 4.0, your total return if all win would be £10 x 2.0 x 3.0 x 4.0 = £240.

5. **Risk**: The risk with a Treble bet is that if just one of your selections loses, the entire bet loses. There is no partial payout with a Treble; all selections must be correct.

6. **Payout**: If all selections win, you receive your winnings, which include your original stake plus the profit from the bet.

It’s important to note that Treble bets can offer higher returns than single bets because the odds are multiplied together. However, the increased risk of losing the entire bet due to a single incorrect selection is a trade-off for the potential higher payout. Accumulators like Trebles are popular with bettors who are willing to take on more risk for the chance of a big win.