Mirra's Tilt options include a Standard Tilt, Tilt Limiter, and Tilt Limiter with Seat Angle control. All 3 have a tilt tension adjustment so the chair leans back based on your weight.
Provides only tilt tension adjustment
Allows the user to set the tilt range to lock or limit the amount of recline
Tilt Limiter with Seat Angle:
Allows the user to select the tilt range PLUS either a horizontal or 4-degree forward seat angle