Abstract: A suspension device/damper for vehicles is provided, which includes a hydraulic damping unit (11) substantially acting linearly having a piston (20) provided with a guide rod (21) and operating in a chamber (16) containing an incompressible fluid. With the hydraulic damping unit (11) is combined a pneumatic damping unit (12) having progressive effect, activated by and collaborating with the damping action of said hydraulic unit. The pneumatic damping unit (12) includes a pressing head (23) operating through an elastic membrane (24) onto an air cushion (25) with a variable effect in response to the movements of the piston (20) in the chamber containing the incompressible fluid of the hydraulic damping unit (11).