Reverse swing is a bowling technique in cricket where the ball moves in the opposite direction to what is expected, typically occurring when the ball is older and worn. This phenomenon happens due to the uneven wear on the ball's surface, which creates different air pressures on either side, allowing the bowler to make the ball swing late in its trajectory. Bowlers like Wasim Akram and Shahid Afridi are known for their ability to master reverse swing, making it a valuable skill in fast bowling. Conditions such as humidity and the type of ball used can influence the effectiveness of reverse swing, making it a strategic element in the game.