Technical indicator normally formed by set of two moving averages marking upper and lower price range levels. Investors and traders use this to help determine extreme overbought and oversold conditions within a market. Usually overspread on a price chart, are also helpful in knowing trading ranges for a specific trading instrument.

The moving average computes two moving averages using the high and low price inputs. The two averages are computed using price data from the same number of bars, as identified by the input length. The high price’s average climbs by a user-defined percent and then placed. The Low price’s average declines by a user-defined percentage and then placed. The inputs can be changed to suit every investor's (or trader's) style and preferences.