This is a keltner channel calculated using the Jurik Moving Average.
Special thanks to auroagwei www.tradingview.com/u/auroagwei/
Special thanks to everget www.tradingview.com/u/everget/
Special thanks to auroagwei www.tradingview.com/u/auroagwei/
Special thanks to everget www.tradingview.com/u/everget/