The “Easyrig Vario 5 w/ Serene” has an adjustable weight range from 5-17kg (11-38 lbs). By turning the adjustment screw located on the back, you can easily change the tension / power of the line. The Serene is a patent pending two axis spring arm that attaches at the end of the Easyrig (2/2.5/3 or Vario5) arm. It stabilizes vibrations and motion errors on the vertical axis that comes from walking or running with the rig. It also stabilizes side to side errors in the same scenarios by counter pivoting around it’s center axis.