This is a series of three Keltner channels, which are essentially sets of EMAs with a multiplier to spread them for dynamic support and resistance structures.
Keltner can be used similarly to Bollinger Bands, but price can remain outside of the EMA range for extended periods of time.
Users can change the collective resolution, individual length, individual multiplier, and calculation style of each of the sets.
By default, the Keltner channels all have length of 500 and multipliers of 4, 7, and 10. Fills are available between each upper and lower EMA of the channel.
I use this for trend analysis and when price is prone to reversals.