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).
"Finally, a family of chairs I can stand behind.
BQErgonomics chairs are functionally fashionable as well as elegantly engineered."
Dr. Scott Donkin, DC, DACBOH
Author: Sitting On The Job, Fit For Work, Peak Performance Body and Mind, Sitting Fit
BQ Ergonomics LLC
11888 West 91st Street
Overland park, KS 66214
Office: 877.938.9034