The roller skates comprise a frame (3) provided with two or more rollers aligned one behind the other in a common medial plane. Each roller (4, 5) is configured like a narrow bobbin with two circular flanges provided with bandages and a recessed central hub mounted inside a ball bearing. This ball bearing is mounted in an orifice of a central plate (24) of the frame, said plate carrying also a front stop (6) and a rear stop (7). A member absorbing the shocks in the radial direction is interleaved between the ball bearing and the plate (24). Preferably, the frame (3) of the roller skates is fitted with a leg support (1) which is hinged with respect to a transverse axis (Y) at the ankle. A brake for braking the rollers (4, 5) may be mounted on the central plate (24) of the frame. Due to the particular shape of the rollers, their bearings and the frame are lighter.