The Dynamic has a weight knob at the front, under the seat. After loosening this knob you can shift it up (for a lighter setting) or down (for a heavier setting).
“I work in this chair because I look at screens all day. Takes the pressure off my back. That's why I love this chair. If I could golf in this chair too and take the pressure off my back between golf swings: I would!! it's a GREAT chair”
BQ Ergonomics LLC
11888 West 91st Street
Overland park, KS 66214
Office: 877.938.9034