Abstract: The present invention relates to a braking device for a stroller which provides the braking function on both rear wheels synchronously. The present invention utilizes a pedal which can swing left and right to carry a rotary cam mechanism. Then the pedal will convert the swinging motion to a linear back and forth motion on the left and right braking rods. To step on the pedal is to control the motion of left and right braking rods. The left and right braking rods will be carried by the pedal to brake or release these two wheels. The pedal further has a holding mechanism for keeping the pedal in a braked or released position.

Abstract: A detachable arm for a baby stroller comprises a left and a right sub-arms releasably attached to a left and a right sub-frames respectively by a respective engaging member, and an attaching member for releasably attaching left and right sub-arms together wherein left and right sub-arms are attached to form a complete arm in an operating position, and left and right sub-arms are separated each other and rotate downwardly a predetermined angle with respect to sub-frames when the attaching member is separated from one of the sub-arms, or alternatively left and right sub-arms are separated from sub-frames when the engaging member are separated from sub-frames in a non-operating position.