A child stroller comprising: a frame member ; a wheel attachment member including a first end and second end, a wheel coupled to the first end, the second end coupled to the frame member; and a shock absorber comprising: a body including an upper end coupled to the frame member and a lower end coupled to the wheel attachment member ; a spring mechanism disposed within the body, the spring mechanism including an upper coil spring and a lower coil spring disposed in a spring body , the upper coil spring and the lower coil spring having different spring constants; an upper housing including a recess ; a lower housing including a recess ; and wherein the spring body has an upper end extending into the recess of the upper housing and a lower end extending into the recess in the lower housing , characterized in that the shock absorber further comprises: an upper spring seat disposed within the upper housing, an upper end of the upper coil spring being disposed on a lower surface of the upper spring seat ; wherein a lower end of the upper coil spring and an upper end of the lower coil spring rest on upper and lower faces, respectively, of a spring separator disposed within the spring body, and wherein the upper spring seat is secured within the upper housing by an upper spring seat rivet that passes through the upper spring seat and through apertures defined in front and rear faces of the upper housing . a frame member ; a wheel attachment member including a first end and second end, a wheel coupled to the first end, the second end coupled to the frame member; and a shock absorber comprising: a body including an upper end coupled to the frame member and a lower end coupled to the wheel attachment member ; a spring mechanism disposed within the body, the spring mechanism including an upper coil spring and a lower coil spring disposed in a spring body , the upper coil spring and the lower coil spring having different spring constants; an upper housing including a recess ; a lower housing including a recess ; and wherein the spring body has an upper end extending into the recess of the upper housing and a lower end extending into the recess in the lower housing , a body including an upper end coupled to the frame member and a lower end coupled to the wheel attachment member ; a spring mechanism disposed within the body, the spring mechanism including an upper coil spring and a lower coil spring disposed in a spring body , the upper coil spring and the lower coil spring having different spring constants; an upper housing including a recess ; a lower housing including a recess ; and wherein the spring body has an upper end extending into the recess of the upper housing and a lower end extending into the recess in the lower housing , characterized in that the shock absorber further comprises: an upper spring seat disposed within the upper housing, an upper end of the upper coil spring being disposed on a lower surface of the upper spring seat ; wherein a lower end of the upper coil spring and an upper end of the lower coil spring rest on upper and lower faces, respectively, of a spring separator disposed within the spring body, and wherein the upper spring seat is secured within the upper housing by an upper spring seat rivet that passes through the upper spring seat and through apertures defined in front and rear faces of the upper housing . an upper spring seat disposed within the upper housing, an upper end of the upper coil spring being disposed on a lower surface of the upper spring seat ; wherein a lower end of the upper coil spring and an upper end of the lower coil spring rest on upper and lower faces, respectively, of a spring separator disposed within the spring body, and wherein the upper spring seat is secured within the upper housing by an upper spring seat rivet that passes through the upper spring seat and through apertures defined in front and rear faces of the upper housing . <EOS>