Bollinger Bands are a trading tool that helps identify market volatility and potential price trends. They consist of three lines: a simple moving average (SMA) in the middle, with two outer bands that adjust based on price volatility.The middle line is typically set to a 20-period SMA, providing a baseline for price trends. The outer bands are positioned two standard deviations away from the SMA. When the bands are close together, it indicates low volatility, while wider bands signal high volatility.Traders often use these bands to gauge potential price movements. When a price approaches the upper band, it may suggest an overbought condition, leading to a possible price pullback. Conversely, if the price nears the lower band, it may indicate an oversold condition, signaling a potential price increase.Bollinger Bands can be applied across various time frames and are versatile for different market conditions, making them a popular choice among traders looking to make informed decisions based on price action and volatility.