The straddle bet in poker is an extra bet that doubles the big blind and is placed before the cards are dealt. Generally, only the player in the UTG position is given the option of making a straddle bet, although, in some games, further poker straddles can be placed, always doubling the previous bet amount.
Straddle Poker Example:
Let’s say you’re playing a $1/$2 no-limit Hold’em game and are seated in the UTG position. You can straddle by posting a $4 bet or twice the big blind. If the casino or poker room allows further straddling, the next player can post a straddle for $8, the one after can bet $16, and so on.